If 3 shirts cost $90 , find the cost of 4 shirts.

Question

If 3 shirts cost $90 , find the cost of 4 shirts

Answer 1

Give this a try (and try to understand & remember why it's a good process):

1. calculate the unit price, i.e. one shirt costs $90 ÷ 3 since three cost ninety bucks.

4. now multiply this price of one shirt by four, to get the price of 4 shirts.

 

Note: we;re using COST as same as price (cost to the purchaser).