Question

9. A full-grown giraffe is about 6 times

Answer 1

The mass of full grown giraffe is 372.42 kg and mass of full grown lion is 62.07 kg and mass of full grown cheetah is 15.51 kg

Solution:

Let "a" be the mass of full grown giraffe

Let "b" be the mass of full grown lion

Let "c" be the mass of full grown cheetah

A full-grown giraffe is about 6 times  heavier than a full-grown lion

a = 6b ------- eqn 1

A full-grown  cheetah is about one-quarter as heavy as a  full-grown lion

$c = \frac{1}{4} \times b\\\\c = \frac{b}{4} ----- eqn\ 2$

Together, they are about  450 kg

Therefore,

a + b + c = 450

Substitute eqn 1 and eqn 2 in above

$6b + b + \frac{b}{4} = 450\\\\24b + 4b + b = 450 \times 4\\\\29b = 1800\\\\b = 62.07$

Substitute b = 62.07 in eqn 1

$a = 6(62.07)\\\\a = 372.42$

Substitute b = 62.07 in eqn 2

$c = \frac{62.07}{4} = 15.51$

Thus, mass of full grown giraffe is 372.42 kg and mass of full grown lion is 62.07 kg and mass of full grown cheetah is 15.51 kg