Question

samir and jillian share a phone plan. each month they can use a combined total of up to 8 gb of data. so far this month, samir has used 4.23 gb and jillian has used 2.89 gb. they want to know whether they still have data left to use. find the sum of samirs and jillians data. compare that amount to 8 gb. an exact calculation is not necessary to solve the problem. you can approximate the sum by rounding the addends. round each person’s data to the nearest gigabyte. samir: gb jillian:? gb

Explanation:

Step1: Round Samir's data

Samir used 4.23 GB. To round to the nearest gigabyte, look at the decimal part (0.23). Since 0.23 < 0.5, we round down. So Samir's rounded data is 4 GB.

Step2: Round Jillian's data

Jillian used 2.89 GB. The decimal part is 0.89, which is ≥ 0.5, so we round up. Thus, Jillian's rounded data is 3 GB.

Answer:

Samir: 4 GB
Jillian: 3 GB