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If 4 girls takes 2(1/2) hours to complete a job, how much time is required for 3 girls to finish the job, working at the same rate of performance? |
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Answer» Answer: ANS =1day Step-by-step explanation: Time taken by 5 CHILDREN to COMPLETE the job = 5 20
days =4 days ∴ Time taken by 4 men to complete the job =(4×2) days =8 days Time taken by 4 women to the complete the job =(8×2) days =16 days Therefore, 5 children's 1 day's work = 4 1
4 men's 1 day's work = 8 1
4 women's 1 day's work = 16 1
∴ (12 men's + 10 children's + 8 women's ) 1 day's work =3× (4 men's 1 day's work) +2× (5 children's 1 day's work) +2× (4 women's 1 day's work) =3× 8 1
+2× 4 1
+2× 16 1
= 8 3
+ 2 1
+ 8 1
= 8 8
=1 ∴ Required time =1 day. mark me brainliest |
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