Question

Diana drank 7/10 of a cup of water at breakfast and 5/6 of a cup of water at lunch. How much water did she drink total? Give the answer in simplest form.

Answer 1

Diana drank 23/15 or 1 8/15 cups of water.

Explanation:

We now need to add 7/10 and 5/6.

But first, we need to find the lcm of the denominators. The lcm, or lowest common multiple is 30, which is the lowest number that is a multiple of both 10 and 6.

21/30 + 25/30 = 46/30

46/2 = 23

30/2 = 15

Diana drank 23/15 or 1 8/15 cups of water.

Answer 2

1 8/15

Explanation:

7/10×6=42/60

5/6×10=50/60

42/60+50/60=92/60

1 32/60= 1 8/15