Marry had 22 3/4 grams of salt. She used 7 1/4 grams to make spinach omelets and 4 7/8 grams to make mushroom omelets. About how much salt does Marry have left? Choose the best estimate.

10 5/8

Step-by-step explanation:

We need to subtract (7 1/4 + 4 7/8) from 22 3/4 grams of salt.

We compute the whole numbers and fractions separately:-

7 + 4 = 11

1'/4 + 7/8 = 2/8 + 7/8 = 9/8 = 1 1/8.

So 7 1/4 + 4 7/8 = 12 1/8

Therefore:-

22 3/4 - 12 1/8

22 - 12 = 10

3/4 - 1/8 = 5/8

= 10 + 5/8 = 10 5/8 (answer)