Over 3 days, Aniston practiced the piano a total of 5 hrs last week. She practiced 1 1/4 hrs on Monday and twice that amount on Wednesday. How many hrs did she practice on Friday?

Question

Please simply this problem so I can explain it to my daughter

Answer 1

5 - (1 and 1/4) - 2 * (1 and 1/4) =

5 - 5/4 - 2*5/4 =

5 - 5/4 - 10/4 =

5 - 15/4

(20-15)/4 =

5/4 = 1 and 1/4 = 1.25

Note that (1 and 1/4) + 2 * (1 and 1/4) + 1 and 1/4 = 4 * (1 and 1/4) = 4 * 5/4 = 5