A shop owner bought 30 folders and some journals. he paid $82.50 for the folders. Each journal costs 10 times as much as a folder what is the cost of each journal

Answer: $27.50

30 folders cost $82.50, so

1 folder costs $2.75 (82.50 divided by 30)

2.75 x 10 = 27.50.

Each journal costs $27.50

To solve this one just take 82.50/30=2.75 we use these numbers because we need to divide the total price by the amount bought to see the unit price. Next we take 2.75*10 because the folders are 10x cheaper then the journals which is 27.5. So we now know that each journal costed 27.5

Enjoy!=)