Question

A healthy human heart beats at an average rate of $80$ beats per minute. How many times the heart will beat in $10$ days?

• A. $1.152$ Billion
• B. $1.152$ Million
• C. $1.152\times {10}^7$
• D. $1.152$ Thousand

Answer 1

The correct option is B $1.152$ Million

Number of beats per minute $=80$
$\therefore$ Number of beats per day $=80\times 60\times 24$ ((24 hours in a day and 60 minutes in an hour)
$=115200$
Number of beats in $10$ days
$=115200\times 10$
$=1152000$
$=1.152$ Million