sanju09 wrote:A screwdriver and hammer currently have the same price. If the price of the screwdriver rises by 5 percent and that of the hammer rises by 3 percent, how much more as percent will it cost to buy 3 screwdrivers and 3 hammers?
(A) 3
(B) 3.5
(C) 4
(D) 4.5
(E) 5
Since we're buying the same number of each, we can simply figure out how much the total price will increase if we buy 1 hammer and 1 screwdriver; the increase in percentage will be the same.
The original price is not specified, so we can just plug in our own number:
s = 50, h = 50, total = 50 + 50 =100
new s = 50 + .05(50) = 50 + 2.50 = 52.50
new h = 50 + .03(50) = 50 + 1.50 = 51.50.
new total = 52.50 + 51.50 = 104
old total to new total = 100 to 104, an increase of 4%.
The correct answer is C.
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