Question

a heater boils certain amount of water in 15 minute. Another heater boils same amount of water in 10 minute
time taken to boil same
amount of water when both are used in parallel is​

Answer 1

Answer:

6 minutes

Explanation:

time taken in parallel=

t1×t2/t1+t2=

10×15/10+15=6

therefore 6 minutes

Answer 2

Answer:

6 mins

Explanation:

clarifications of the image

t1 = 15 mins and t2 = 10 mins.

P1 = t2/t1 * P2 = 10/15 * P2 = 2/3 P2

also based on understanding that total power = P1 + P2 for devices connected in parallel.