[" 13) A "12" HP motor has to be operated "8" hr/day."],[" How much will it cost at the rate of "50" paisa/kWh "],[" in "10" days? "]

A 12 HP motor has to be operated 8 hours / day . How much will it cost at the rate of 50 paisa / kWh in 10 days

12 cows together eat 756 kg of grass in 7 days. How much grass will be caten by 15 cows in 10 days?

A radioactive element has half life period of 30 days. How much of it will be left after 90 days?

An electric iron rated 750 W is operated for 2 hours/day. How much energy is consumed by the electric iron for 30 days ?

Shikha earns Rs 3000 for working in 8 days. How much will she earn if she works for 15 days?

Shikha earns Rs 3000 for working in 8 days. How much will she earn if she works for 15 days?

Solve the following examples/ numerical problems. A electric iron rated 750 w is operated for 2 hours/ day. How much energy is consumed by the electric iron for 30 days ?

A radioactive element has half-life period of 30 days. How much of it will be left after 90 days?

A radioactive element has half-life period of 30 days. How much of it will be left after 90 days?

A radioactive element has half-life period of 30 days. How much of it will be left after 90 days?