Question

The masses of mother and baby are in the ratio 175:7. The baby has a mass of 8 pounds. Given that 1 pound = 454 g, calculate the mass of the mother in kg. Give your answer to 1DP.

Answer 1

Given,

The ratio of mass of the mother and baby is 157:7

The mass of the baby is 8 pounds.

1 pound = 454 grams

To find,

The mass of the mother in kilogram unit.

Solution,

Let,the mass of the mother and baby = 175x pounds and 7x pounds, respectively. [Assume,x as a variable to do the further mathematical calculations.]

Now, according to the question,

7x = 8

x = 8/7

So,the mass of the mother = 175 × 8/7 = 200 pounds = 200×454 = 90800 grams = 90.8 kilograms

Hence,the mass of the mother in kilogram unit is 90.8 kilograms.