Question

Shelley's cup of tea cooled down

1
2
of a degree in 10 minutes. At what rate is her tea cooling down

Answer 1

Explanation

The rate of cooling of a cup of tea is required.

The rate of cooling
`(1)/(20) =0.05\\`

0.05 degree per minute

The given cup of tea cools down 1/2 degree

in 10 minutes

The rate of cooling will be in the unit of degree per minute.

So,

`10 minute= (1)/(2) degree\\1minute=(1)/(20) degree`

The rate of cooling is = 0.05 degree per minute