Question

2/3 of a hippos life is spent underwater, the rest of their life out of water is separated into grazing, sleeping and socialising in the ratio 4:7:1. The average life of a hippo is 45 years, how long will it spend doing each of these activities?

Answer 1

Under water is 2/3×45= 30yrs

So rest is 1/3

1/3 is divide in 12 parts

1/3÷12=1/36

Grazing is 4/36×45= 5yrs

Sleeping is 7/36×45=8.75yrs

Socialising is 1/36×45=1.25yrs