Math, asked by gillharjeet395, 10 months ago

Kamran can finish a job alone in 7.5 hours and
Munir can finish the same work alone in 5 hours,
if they work together, in how much time can they
finish the work? how 7.5 become 2/15

Answers

Answered by ChinmoyCR7
1

Answer: Munir can do 5 hour of hardwork

And Kamran can do 8 hours of hardwork

So Kamran did it slowly because he can

more than Munir. So if they do this

together I think it will be around 2.30

hours which includes Diffent time of

hardwork

Answered by amitnrw
9

in 3 hrs they finish the work together

Step-by-step explanation:

Kamran can finish a job alone in 7.5 hours

7.5  = 15/2 hrs

=> Kamran can finish a job alone in 15/2 hrs

=>  Kamran 1 hr  work  = 1/(15/2)  = 2/15

Munir can finish the same work alone in 5 hours,

=> Munir 1 hr Work  = 1/5

Kamran + Munir together 1 hr work  = 2/15  + 1/5

= (2 + 3)/15

= 5/15

= 1/3

Kamran + Munir together  will complete work in   1/(1/3)  = 3 hrs

in 3 hrs they finish the work together

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