A $5,000 TV ad will cause 250 people to attend a show, while a $4,000 ad will cause 280 people to attend. Bob wants to use the most effective method to get 500 people to attend a show. Which advertising method should he use?

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Answer 1 · 2016-08-23T13:04:24

2 runs of the normal ad will be the most effective and will be cheaper.

Read the word problem a few times then summarise the facts in short sentences.

"$5,000 TV ad brings 250 people"
#$4,000 ad brings 280 people"

Plan the calculation: He wants 500 people.
He can't run a fraction of an ad.

2 TV ads means 2 x 250 = 500 people.
Cost will be #2 xx $5,000 = $10,000# for 500 people

2 other ads means 2 x 280 = 560 people.
Cost will be #2 xx $4,000 = $8000# for 560 people.

2 runs of the normal ad will be the most effective and will be cheaper.