Can someone help me with this problem?

Question

Susan did 1/4 of her homework on Tuesday and 1/5 of her homework on Wednesday. What fraction of her homework remains to be done?

Answer 1

To solve this question, let us assign the value 'X' as Susan's homework.

On Tuesday, Susan completed 1/4 of X. On Wednesday, she completed 1/5 of X.

Now, let's sum up how much of her homework she did on both days.

Susan's homework done: 1/4 + 1/5 = 9/20

Therefore, Susan has completed 9/20 of x

To find the fraction of Susan's home work yet to be done, subtract the fraction she has done from 1. The number 1 represents Susan's total homework.

1 - 9/20 = 11/20 of X

Therefore, Susan is yet to complete 11/20 of her homework.

Answer 2

This is adding simple fractions. In order to add fractions they have to have a common denominator. The least common denominator between 4 and 5 is 20. (1/4)*(5/5)= 5/20 (1/5)*(4/4)= 4/20 so now the problem is 5/20 + 4/20=....

9/20 is how much hw Susan did so she has 11/20 remaining.