Question

In: Math

The total cost of two calculators and four math sets is R440.00, If a calulator cost...

The total cost of two calculators and four math sets is R440.00, If a calulator cost R40 more than a math set, what is the cost of each?

Solutions

Expert Solution

Solution: Let the cost of one calculator be      and on math set be

cost of   calculators

and cost of   math sets

But the total cost of     calculators and     math sets

The cost of calculator is   more than a math set

Solving both the equation simultaneously

  

+

__________________

  Cost of one calculator is    and cost of one math set is

milcah answered 1 year ago
Next > < Previous

Related Solutions

Each of the following four sets contains two electrons, each of which is defined by four...
Each of the following four sets contains two electrons, each of which is defined by four quantum numbers (n, l, ml, ms). For each set, indicate whether the quantum numbers for the two electrons are valid for the two electrons in the highest energy subshell of a neutral titanium atom. If they are not valid, list the principle that the quantum numbers violate (Pauli Exclusion, Aufbau, or Hund’s Rule) and explain below. (the numbers are shown below in the order...
C. Math confidence and statistics grade Low Math Confidence High Math Confidence TOTAL A or B...
C. Math confidence and statistics grade Low Math Confidence High Math Confidence TOTAL A or B 50 100 150 C or D 25 30 55 TOTAL 75 130 205 Reproduce the table using column percentages Reproduce the table using row percentages Reproduce the table using total percentages Is there a clear independent variable; which variables is it? What is the null hypotheses? Compute the Chi-square; is the association significant (careful computing df and finding critical value)? Interpret the association
Finite Math Four fair six sided dice are rolled. Given that at least two of the...
Finite Math Four fair six sided dice are rolled. Given that at least two of the dice land on an odd number, what is the probability that the sum of the result of all four dice is equal to 14?
Case Study There two sets of questions for this module, 1-4 and 5-8, for a total...
Case Study There two sets of questions for this module, 1-4 and 5-8, for a total of eight questions. Using the concept of the epidemiological triangle to complete one of the following case studies: John J. is a school nurse at Jackson Elementary School, which was built in 1960. Nurse John has noticed that many students from Ms. Zee’s second grade class have come to the clinic complaining about coughing, sneezing, runny nose, and watery eyes. Nurse John has also...
A community college claims that the standard deviation in the cost of TI calculators is at...
A community college claims that the standard deviation in the cost of TI calculators is at least $15. A simple random sample of 43 stores that sell TI calculators yielded a sample mean of $84 and a sample standard deviation of $12 for the cost of TI calculators. Does this data refute the claim made by the community college? Perform a statistical test at the 5% significance level. You may assume that the cost of TI calculators is normally distributed....
1a.) Which two sets of four numbers have the same median but different means? a. 4,...
1a.) Which two sets of four numbers have the same median but different means? a. 4, 6, 4, 31 and 11, 4, 10, 14 b.  2, 0, 1, 4 and 1, 1, 1, 2 c. 9, 13, 22, 1 and 11, 21, 2, 11 d. None of the above 1b.) Which two sets of four numbers have the same mean but different standard deviation? a. 3,2,6,1 and 1,6,2,3 b. 3,2,6,1 and 0,2,3,7 c. 1,2,3,4 and 0,3,0,6 d. 1,1,1,1 and 3,3,3,3
Two sets are separated if the intersection of the closure of one of the sets with...
Two sets are separated if the intersection of the closure of one of the sets with the other is empty. a) Prove that two closed and disjoint sets of some metric space are separate. b) Prove that two open and disjoint sets of some metric space are separate.
Quantity Total Cost Total Fixed Cost Total Variable Cost Average Fixed Cost Average Total Cost Average...
Quantity Total Cost Total Fixed Cost Total Variable Cost Average Fixed Cost Average Total Cost Average Variable Cost Marginal Cost 0 30 1 75 2 150 3 255 4 380 5 525 6 680 7 840 8 1010 9 1200 Given the quantity and total cost, calculate for total fixed cost, total variable cost, average fixed cost, average total cost, average variable cost, and marginal cost. Excel formulas would be nice but not required.
The following is total monthly budgeted cost and activity information for the four activity centers in...
The following is total monthly budgeted cost and activity information for the four activity centers in the billing department of Oregon Power Company: Activity Center Variable Fixed Cost Driver Statement inquiry $77,385 $150,000 3,300 labor hours Correspondence $9,585 $26,000 2,700 letters Account billing $171,500 $79,000 2,450,000 lines Payment verification $12,980 $78,000 22,000 accounts In September, actual total costs and activity were as follows: Activity Center Total Costs Driver Amount Statement inquiry $225,403 3,220 labor hours Correspondence $35,231 2,650 letters Account...
The following is total monthly budgeted cost and activity information for the four activity centers in...
The following is total monthly budgeted cost and activity information for the four activity centers in the billing department of Oregon Power Company: Activity Center Variable Fixed Cost Driver Statement inquiry $79,200 $156,000 3,200 labor hours Correspondence $9,639 $22,000 2,700 letters Account billing $144,000 $77,000 2,400,000 lines Payment verification $12,095 $80,000 20,500 accounts In September, actual total costs and activity were as follows: Activity Center Total Costs Driver Amount Statement inquiry $234,023 3,140 labor hours Correspondence $31,154 2,550 letters Account...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT