Question

calories used per hour
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 900
making beds + 175
fast walking + 300
1,375 calories used
2,125 calories taken in
− 1,375 calories used
750 calories left
kate plays table tennis for 3 hours, and slow walks for 1 hour. if she consumes 2000 calories, how many calories remain to be used?
1085 calories
1090 calories
1095 calories
1100 calories

Explanation:

Step1: Calculate calories used for table - tennis

Calories used for 3 - hour table - tennis: $230\times3 = 690$ (since 230 calories are used per hour for playing table - tennis)

Step2: Calculate calories used for slow walking

Calories used for 1 - hour slow walking: 225 (as 225 calories are used per hour for slow walking)

Step3: Calculate total calories used

Total calories used: $690 + 225=915$

Step4: Calculate remaining calories

Remaining calories: $2000−915 = 1085$

Answer:

1085 calories