Question

Sarah and her friends ordered a pizza. Sarah ate 5 1 ​ of the pizza. Her friend John ate 20% and her friend Jules ate half of the pizza. How much pizza is left over?

Answer 1

Given:

Sarah ate
`(1)/(5)` of the pizza.

Her friend John ate 20%.

Her friend Jules ate half of the pizza.

To find:

The remaining part of the pizza.

Solution:

We have,

Sarah ate =
`(1)/(5)` of the pizza.

John ate =
`20\%` of the pizza.

=
`(20)/(100)` of the pizza.

=
`(1)/(5)` of the pizza.

Jules ate =
`(1)/(2)` of the pizza.

Total part of a pizza they ate =
`(1)/(5)+(1)/(5)+(1)/(2)`

=
`(2+2+5)/(10)`

=
`(9)/(10)` of the pizza.

Now, the remaining pizza is

Remaining pizza = 1 - Total part of a pizza they ate

=
`1-(9)/(10)` of the pizza.

=
`(10-9)/(10)` of the pizza.

=
`(1)/(10)` of the pizza.

Therefore, the remaining pizza is
`(1)/(10)` of the pizza.