Noni can paint his garage in 3 1⁄2 hours while his friend Anton can paint it in 4 hours. If they work together, if they started at 4:00 P.M. at what time they will finish the said job?
needs equate, solution, represent, checking, solution = 20 points
ANSWER = 1.86 hr
Time taken by Noni = 3 .5 hr
Work done by
Noni in 1 hr = 1 / 3.5
Time taken by friend = 4 hr
Work done = 1/4
When they work
Together = 1 / 3.5 + 1 /4
= 4 + 3.5 / 14
= 0.536
Time taken = 1 / 0.536
= 1.86 hr
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Noni paints 1 garage in 3.5 hrs or 1 garage/3.5 hrs=0.286 garage/hr
Anton paints 1 garage in 4 hrs or 1 garage/4 hrs=0.250 garage/hr
And together: 0.286 garage/hr + 0.250 garage/hr=0.536 garage/hr
To paint the whole garage: 1 garage/0.536 garage/hr=1.87 hours
ANSWER::-
Noni and Anton can paint the entire garage in 1.87 hours.