Question

two taps P and Q can fill an empty tank in 4 and 3 hours respectively. If both taps are opened together in how much time the empty tank will be filled​

Answer 1

Answer:

1 5/7 hrs

Step-by-step explanation:

Given,

two taps P and Q can fill an empty tank in 4 and 3 hours respectively.

P=1/4

Q=1/3

P+Q=1/4+1/3

P+Q=7/12

P+Q=1 5/7