Suppose 10% of all redeemed coupons at a supermarket are for 50% off the item purchased. A simulation is used to model a coupon randomly selected and then recorded as 50% off or not 50% off. Which simulation best models the scenario?

Place 40 equally sized pieces of paper in a hat. Of the 40, 4 read “50% off” and the rest read “not 50% off ”.
Place 50 equally sized pieces of paper in a hat. Of the 50, 10 read “50% off” and the rest read “not 50% off ”.
Place 30 equally sized pieces of paper in a hat. Of the 30, 6 read “50% off” and the rest read “not 50% off ”.
Place 80 equally sized pieces of paper in a hat. Of the 80, 10 read “50% off” and the rest read “not 50% off ”.

1 Answer
Apr 21, 2018

Place 40 equally sized pieces of paper in a hat. Of the 40, 4 read “50% off” and the rest read “not 50% off ”.

Explanation:

If you want #10%# of the coupons to be #50%# off, #1/10# of the coupons out of the whole need to #50%# off

Ratio and Percentage of #50%# off for each trial:
A. #4/40= 1/10*100= 10%#

B.#10/50= 1/5*100= 20%#

C.#6/30= 1/5*100= 20%#

D.#10/80= 1/8*100= 12.5%#