Question: If a person reads 20 pages in 30 minutes, how many pages can he read in 2 hours?
Options:
80 pages
100 pages
120 pages
140 pages
Correct Answer: 100 pages
Solution:
Pages per hour = 20 pages / 0.5 h = 40 pages/h. In 2 hours = 40 pages/h Γ 2 h = 80 pages.
If a person reads 20 pages in 30 minutes, how many pages can he read in 2 hours?
Practice Questions
Q1
If a person reads 20 pages in 30 minutes, how many pages can he read in 2 hours?
80 pages
100 pages
120 pages
140 pages
Questions & Step-by-Step Solutions
If a person reads 20 pages in 30 minutes, how many pages can he read in 2 hours?
Step 1: Determine how many pages the person reads in 30 minutes, which is given as 20 pages.
Step 2: Convert 30 minutes into hours. Since 30 minutes is half an hour, we have 0.5 hours.
Step 3: Calculate the reading speed in pages per hour. Divide the number of pages (20) by the time in hours (0.5): 20 pages / 0.5 hours = 40 pages per hour.
Step 4: Now, find out how many pages can be read in 2 hours. Multiply the reading speed (40 pages per hour) by the time (2 hours): 40 pages/hour Γ 2 hours = 80 pages.
Step 5: The final answer is that the person can read 80 pages in 2 hours.
Rate of Work β Understanding how to calculate the rate of reading (pages per hour) based on a given time and quantity.
Unit Conversion β Converting time from minutes to hours to facilitate calculations.
Multiplication for Total Output β Using multiplication to find the total output over a specified time period.
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