Question

activity|calories|activity|calories
sitting in class|100|making beds|175
studying|105|washing dishes|180
eating|125|playing table tennis|230
typing|140|lifting weights|500
lying down|75|standing|125
slow walking|225|fast walking|300
biking|900|jogging|550
example 2,125 calories taken in biking making beds fast walking calories used 900 + 175 + 300 1,375 2,125 calories taken in - 1,375 calories used 750 calories left
angela consumed 2850 calories. if she types for 3 hours, how many calories are left to be used?
2230 calories
2330 calories
2430 calories
2530 calories

Explanation:

Step1: Find calories used for typing

From the table, typing burns 140 calories per hour. For 3 - hour typing, the calories used for typing is $140\times3 = 420$ calories.

Step2: Calculate remaining calories

Angela consumed 2850 calories. After using 420 calories for typing, the remaining calories is $2850−420=2430$ calories.

Answer:

2430 calories