Question

You have 20 quarters. You find 40% more quarters in your room. Then you go shopping and spend 50% of the total number of quarters. Write a expression that represents the total number of quarters you take with you when you go shopping. How much money do you have left

Answer 1

a) 28 quarters

b) 14 quarters

Explanation:

We are given the following in the question:

Number of quarters = 20 quarters

Number of quarters in room = 40%

Total number of quarter in room =

`=40\%* (20)\\\\=(40)/(100)* 20\\\\=8`

Thus, the total quarters taken to shopping =

`=20 +40\%* (20)\\\\=20+8\\=28`

Thus, 28 quarters were taken to shopping.

Quarter spent on shopping = 50%

Total number of quarter spent in shopping =

`=50\%* (28)\\\\=(50)/(100)* 28\\\\=14`

Money left =

Money taken for shopping - Money spent

`= 28-14\\=14`

Thus, we are left with 14 quarters after shopping.