Answer:
3 1/5 hours
Step-by-step explanation:
1/4 book in 1 1/3 hours.
1 1/3 = 4/3
1/4 book in 4/3 hours
We can set up a proportion.
1/4 book is to 4/3 hours as 3/5 book is to x hours.
(1/4) / (4/3) = (3/5) / x
Cross multiply:
(1/4)x = 4/3 × 3/5
(1/4)x = 12/15
Multiply both sides by 4.
x = 48/15
Reduce:
x = 16/5
x = 15/5 + 1/5
x = 3 1/5
Answer: 3 1/5 hours
