A 24 - hour day is how many times as long as 60 seconds ?

The average human heart beats at 72 times per minute. How many times does it beat in 15 seconds? How many in 1 hour? How many in a day?

The average human heart beats at 72 times per minute. How many times does it beat in 15 seconds? How many in an hour?

There are 864,00 seconds in a day. How many days long is a second? Express you answer in scientific notation.

How many seconds make one day?

How many seconds make one day?

Metric time is defined so that one day equals 10 hours, one hour equals 100 minutes, and one minute equals 100 seconds. One metric second equals how many normal seconds?

90 men can complete a work in 24 days working 8 hours a day. How many men are working 8 hours a day. How many men are required to complete the same work in 18 days working 7(1)/(2) hours a day ?

300 men can construct a200m long wall in 12 days working 8 hours a day. In how many days can 120 men construct 180 m long wall working 9 hours per day?

A 100 W electric bulb is used for 10 hours a day. How many units of energy are consumed in 30 days?