Phil ate 25 of a pizza, Caroline ate 14 of a pizza. How much did they eat in all?

2 Answers
Mar 24, 2018

1320 of a pizza

Explanation:

Convert each fraction so that it has a common denominator. 5 and 4 are common factors of 20, so let's use 20 in the denominator.

25=251=2544=820

14=141=1455=520

Now it's easy to add them:

820+520=1320

Mar 24, 2018

Phil and Caroline ate 1320 of the pizza in all.

Explanation:

The lowest common multiple of 5 and 4 is 20.

205=4
Multiplying the numerator and denominator of 25 by 4:
2454=820

204=5
Multiplying the numerator and denominator of 14 by 5:
1545=520

Now that both fractions have the same denominator, we can add their numerators and keep the same denominator.
25+14=820+520=1320