a does 20% less work than B if a can finish a piece of work in 7 and half hour and B can finish it in??
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2
Answer:
let work done by B be x
work done by A is x - 20% of x
time taken by A= 7.5 hrs
X - (20/100)x = 7.5 hrs
80/100x = 7.5 hrs
x =
7.5 \times 100 \div 80
9.375 hrs according to calculater
Answered by
12
- "A" does 20% less work than "B" i.e 80%
- "B" do 100% work
- "A" finish its work in hrs
Here 100% And 80% is efficiency of A and B
- "B" can finish work in = ?
━━━━━━━━━━━━━━━━━━━━━━━━━━
A = 80%
B = 100%
Work finished by B =
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