Health: The directions for a pain reliever recommend that an adult of 60 kg and over take 4 tablets every 4 hours as needed, and an adult who weighs between 40 and 50 kg take only 2(1/2) tablets every 4 hours as needed. Each tablet weighs 4/25 gram
a. If a 72 kg adult takes 4 tablets, how many grams of pain reliever is he or she receivings
b. How many grams of pain reliever is the recommended dose for an adult weighing 46 kg
Solution:
To solve the above problem let us write the given parameters:
Weight of each tablet = 4/25 grams
An adult who weighs between 40 and 50 kg can take = 2(1/2) tablets every 4 hours
a. Weight of 4 tablets = 4 × 4/25 = 16/25 grams.
b. Weight of 2(1/2) grams tablets = 4/25 × 2(1/2)
= 4/25 × 2(1/2)
= 4/25 × 5/2
= 2/5
Therefore, if a 72 kg adult takes 4 tablets he is receiving 16/25 grams of pain reliever and
2/5 grams of pain reliever is recommended dose for an adult weighing 46 kg.
✦ Try This: Evaluate 7(8/9) × 1(2/3)
To solve the above problem you can follow the fractions rules to get the required answer.
☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 2
NCERT Exemplar Class 7 Maths Chapter 2 Exercise Problem 65
Health: The directions for a pain reliever recommend that an adult of 60 kg and overtake 4 tablets every 4 hours as needed, and an adult who weighs between 40 and 50 kg take only 2(1/2) tablets every 4 hours as needed. Each tablet weighs 4/25 gram, a. If a 72 kg adult takes 4 tablets, how many grams of pain reliever is he or she receiving, b. How many grams of pain reliever is the recommended dose for an adult weighing 46 kg
Summary:
After applying fraction rules on further calculation we examined that if a 72 kg adult takes 4 tablets he is receiving 16/25 grams of pain reliever and 2/5 grams of pain reliever is recommended dose for an adult weighing 46 kg
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