Question

Marcello needed to buy 275 balloons for a water balloon fight, but’s the balloons only came in packs of 2. How many packs of balloons would he need to buy ?

Answer 1

138 packs

Explanation:

Marcello thinks it better to have more water balloons on hand that he actually needs fo the water balloon fight, so he rounds up the number of balloons needed to 276 from 275.

Then he divides 276 by 2, obtaining 138. He needs to buy 138 packets of balloons. This way, he will have acquired the required 275 balloons plus 1 left over.