Problema Solution
A man goes into a grocery store and buys a grapefruit and a toy ball. A 7% tax is applied to the price of non-food items. If the total bill is $5.15, including $0.18 in tax on the toy ball, what are the prices of the grapefruit and the ball?
Answer provided by our tutors
Tax is 7%. Let the original amount of the ball be x. Now, we can write
7% of x = $0.18. or, 7/100*x= 0.18 or, x = 0.18 * 100/7 or, x = 180/7
so, x = $ 2.57. Hence, Cost of ball is $2.57. Remaining amount after the price of ball is
$5.15 - $0.18 - $2.57 = $2.40 which is the price of grapefruit.