Question

The mass of a newborn baby's brain has been found to increase by about 1.6 mg perminute. (a) How much does the brain's mass increase in one day?

Answer 1

ANSWER

2304 mg

EXPLANATION

The rate is given in mg per minute. To find how much the brain's mass increases in one day we have to find how many minutes are in a day.

Assuming that a day has 24 hours and 1 hour has 60 minutes:

$24h\cdot\frac{60\min}{1h}=1440\min$

One day has 1440 minutes. Then, in one day the brain's mass increases:

$1.6mg/\min \cdot1440\min =2304mg$

The newborn baby's brain's mass increases 2304 mg in one day.