With the TV turned on, Molly read 20 pages of her history book in 2 hours. Then she turned off the TV and was able to read 25 pages in 1 hour. Select the choice that correctly expresses her average reading rate with the TV on as a percent of her average reading rate with the TV off.
Answers
Given: With the TV turned on, Molly read 20 pages of her history book in 2 hours. Then she turned off the TV and was able to read 25 pages in 1 hour.
To find: Average reading rate with the TV on as a percent of her average reading rate with the TV off.
Solution: When TV is on:
Number of pages read= 20 pages
Time taken for reading= 2 hours
Average reading rate
= Number of pages read / Time taken
= 20 / 2
= 10 pages/hour
When TV is off:
Number of pages read= 25 pages
Time taken for reading= 1 hour
Average reading rate
= Number of pages read / Time taken
= 25/1
= 25 pages/hour
Average reading rate with the TV on as a percent of her average reading rate with the TV off
= (Reading rate with TV on/ Reading rate with TV off) × 100
= (10/25) × 100
= 0.4 × 100
= 40%
Therefore, her average reading rate with the TV on is 40% of her average reading rate with the TV off.
Answer:
the answer is c
Step-y-step explanation:
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