Question

3) Find the change from $100 when buying:

a) 3 boxes of chocolates at $11 each
b) x boxes of chocolates at $11 each
c) x boxes of chocolates at $ y each

Answer 1

Correct option is E)

Explanation:

Let y be the total number of boxes needed Given that, Each box carries c candy bars ∴ total number of candy bars needed = cy .... Cond(1) Now, No. of members = 3c each member sells x bars per day ∴ ∴ In 5 days no. of bars sold = 3cx×5=15cx ..Cond(2) Since Condition 1 and 2 are same,

cy=15cx ∴y=15x No. of boxes = 15x