Question

A teacher orders homework books for her class of 30 students.

The total value of the order is $135.
Two more students join her class, so she orders two extra books.
What is the total value of the order now? $

Answer 1

The total value of the order now is $142.

Explanation:

assuming all books are at the same price

135 ÷30=4.5

2x4.5=7

135+7=142

Answer 2

Total value: $144
Explanation: each book cost $4.50