Question

Cathy spent 1 1/4 hours doing her math homework. She spent 1/4 of this time in revising multiplication facts. How many hours did she spend practicing her multiplication facts?

Answer 1

Given data:

• Cathy spent 1 1/4 hours doing her math homework.
• She spent 1/4 of this time in revising multiplication facts.

To find:

How many hours did she spend practicing her multiplication facts?

Step-by-step explanation:

Total time spent in doing math homework is

= 1 1/4 hours

= 5/4 hours

She spent 1/4 of the above time in revising multiplication facts.

Thus the time spent in revising so is

= 1/4 of 5/4 hours

= 1/4 × 5/4 hours

= 5/16 hours

Answer:

Hence Cathy spent 5/16 hours in practicing multiplication facts.

Answer 2

Given: Time spent on math test = $1\dfrac14\text{ hours}$   (i)

Time spent on multiplication facts = $\dfrac14\times\text{Time spent on math test}$ (ii)

To find: Time spent on multiplication facts

From (i) and (ii) , we get

Time spent on multiplication facts =$\dfrac14\times1\dfrac14\text{ hours}$

$=\dfrac14\times\dfrac54\text{ hours}\\\\=\dfrac{5}{16}\text{ hours}$

Hence, time spent on multiplication facts =  $\dfrac{5}{16}\text{ hours}$.