Last year you purchased 20 shirts at $15 apiece, 30 CDs at $12 each, and 5 sweaters at $25 apiece. This year you buy 20 shirts at $20 apiece, 30 CDs at $12 apiece, and 5 sweaters at $20 a apiece. If last year's index was 100, this year's index is

Question

Quizplus · Accepted Answer

To calculate the index, we need to find the total cost of the items in both years and compare them.

Last year's total cost:

20 shirts x $15 = $300 
30 CDs x $12 = $360 
5 sweaters x $25 = $125

Total = $300 + $360 + $125 = $785

This year's total cost:

20 shirts x $20 = $400 
30 CDs x $12 = $360 
5 sweaters x $20 = $100

Total = $400 + $360 + $100 = $860

Now we can calculate the index:

Index = (This year's total cost / Last year's total cost) x 100 
Index = ($860 / $785) x 100 
Index = 1.095 x 100 
Index = 109.5

Therefore, the answer is (C) 109.5.

Last Year You Purchased 20 Shirts at $15 Apiece, 30