Question

Mr. Ramirez gave his class

40
40 minutes to read. Davida reads
28
1
2
28
2
1
​
pages in that time. At what rate, in pages per hour, did Davida read?

Answer 1

38 pages per hour

Explanation:

Rate of reading =
`\frac{\text{Total number of pages read by Davida}}{\text{Time taken to read}}`

By substituting the given values in the question,

Total number of pages read by Davida =
`28(1)/(2)` =
`(57)/(2)`

Time taken by Davida = 45 minutes

Since, 1 minute =
`(1)/(60)` hours

Therefore, 45 minutes =
`(45)/(60)=(3)/(4)` hours

Rate of reading =
`((57)/(2))/((3)/(4) )`

=
`(57)/(2)* (4)/(3)`

= 38 pages per hour

Therefore, rate of reading by Davida is 38 pages per hour.