Question

Ahmad finished his English homework in 1/5 hours. then he completed his math assignment in 3/4 hours. how much more time did Ahmad spend on his math assignment?

Answer 1

We need to substract $\frac{1}{5}$ from $\frac{3}{4}$ using the Common Denominator Method to make the denominators the same.

$$\frac{3}{4}-\frac{1}{5}=\frac{3\cdot{5}}{4\cdot{5}}-\frac{1\cdot{4}}{5\cdot{4}}=\frac{15}{20}-\frac{4}{20}=\frac{11}{20}$$

Answer: Ahmad spent $\frac{11}{20}$ hours more on his math assignment.