Question

Lin’s family has completed 40% of a trip. They have traveled 24 miles. How far is the trip? (If you get stuck, draw a tape diagram)

Then


Marco bought a doll for his little sister. The price on the tag was $35, but it was on sale for 80% off. How much did Marco pay for the doll?

Answer 1

1) 60 miles

2) 7 dollars

Explanation:

1) Question 1

Let x be equal to the full distance of the trip

`0.4x=24`

Divide both sides by 0.4

`(0.4x)/(0.4)=(24)/(0.4) \\x=60`

Therefore, the trip is 60 miles long.

2) Question 2

Let y be equal to the price that Marco paid for the doll.

`35*0.2=y`

We multiply 35 by 1-0.8 because the doll is 80% off, meaning he's paying for 20% of the original price

`7=y`

Therefore, Marco paid $7 for the doll.

I hope this helps!