A can do a piece of work in 7 days working 9 hours each and B can do it in 6 days working 7 hours each. How long will they take to do the work together, working 8.4 hours a day? Need clear solution!
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Answer:
A cancomplete the work in 7×9=63hours
Step-by-step explanation:
and B complete work in 6×7=42hours
A 1hour work=1/63
B 1 hour work=1/42
A+B hour work=1/63+1/42=5/126
both finish work in 126/5hours
no. of days 8.4hour each=126/5×8.4=3days
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