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.
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