Question

Kurt and Maria’s high school is having a newspaper drive.The goal is to collect 3,585 pounds of newspapers. So far, 21% of the goal has been reached.

Kurt estimated the number of pounds of newspapers collected by finding 10% of 3,600 and then multiplying the result by 2.

Maria estimated the number of pounds of newspapers collected by finding 1/5 of 3,600.

Who is right, and why?

a. Neither Kurt nor Maria is right, because 3,500 should be used instead of 3,600.
b. Kurt is right, because finding 1/5 of 3,600 is not a good way to approximate 21% of 3,585.
c. Maria is right, because finding 10% of 3,600 and multiplying the result by 2 is not a good way to approximate 21% of 3,585.
d. Both Kurt and Maria are right, because 3,585 should be rounded up to 3,600, and 21% of this amount can be approximated by either finding 10% of 3,600 and multiplying the result by 2 or by finding 1/5 of 3,600.

Answer 1

D. Both Kurt and Maria are right, because 3,585 should be rounded up to 3,600, and 21% of this amount can be approximated by either finding 10% of 3,600 and multiplying the result by 2 or by finding 1/5 of 3,600.

Answer 2

Option D is correct.

Explanation:

Given information is -

The goal is to collect 3,585 pounds of newspapers. So far, 21% of the goal has been reached.

Kurt estimated the number of pounds of newspapers collected by finding 10% of 3,600 and then multiplying the result by 2.

This can be solved as :

`0.10*3600=360`

And
`360*2=720`

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Maria estimated the number of pounds of newspapers collected by finding 1/5 of 3,600.

`(1)/(5)*3600= 720`

Both Kurt and Maria have the same answer.

So, the correct option is option D.

Both Kurt and Maria are right, because 3,585 should be rounded up to 3,600, and 21% of this amount can be approximated by either finding 10% of 3,600 and multiplying the result by 2 or by finding 1/5 of 3,600.