Question

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Answer 1

Answer:

12/7 = 1.71 hr   ( 1 hr 43 Mins)

Step-by-step explanation:

Tap with larger dia can fill tank in  3 hrs

Tap with larger dia can fill in 1 hr  = 1/3

Tap with smaller dia can fill tank in  4 hrs

Tap with smaller dia can fill in 1 hr  = 1/4

Both tap can fill in 1 hr = 1/3 + 14

= (1/12)(4 + 3)

= 7/12

Both tap together can fill in 12/7  hrs

= 1.71 hr

=  1 Hr 43 mins

Answer 2

Answer:  

12/7 = 1.71 hr   ( 1 hr 43 Mins)  

Step-by-step explanation:

Tap with larger dia can fill tank in  3 hrs  

Tap with larger dia can fill in 1 hr  = 1/3

Tap with smaller dia can fill tank in  4 hrs  

Tap with smaller dia can fill in 1 hr  = 1/4

Both tap can fill in 1 hr = 1/3 + 14  

= (1/12)(4 + 3)  

= 7/12

Both tap together can fill in 12/7  hrs  

= 1.71 hr  

=  1 Hr 43 mins