if 20 people can do a work on 7 days then how many people can do it in 28 days
Answers
Answered by
0
Answer:
5 days
Step-by-step explanation:
formula of inverse propotion.
u1*y1=u2*y2
20*7=28*y2
140=28y2
140/28=y2
5=y2
Answered by
1
Answer:
80 days
Step-by-step explanation:
20 people do in = 7 days
1 person do in = 20×7
= 140
So,
In 140 days done by = 1 person
In 1 days done by = 140 people
In 28 days done by = 140÷28 people
= 5 people
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