Question

please help me
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Answer 1

Answer:

Step-by-step explanation:

Suppose Y can finish a work in x days.

X can finish the work in (x - 3) days.

X's 1 day's work =

1

x−3

X's 4 days work =

4

x−3

Remaining work = 1−

4

x−3

=

x−7

x−3

Y can finish 1 work in x days.

Y can finish 1 work in

x−7

x−3

= x*

x−7

x−3

days.

By hypothesis,

x*

x−7

x−3

+4 = 14

x2−17x+30=0

x = 2 or X = 15

So,X can finish the work in 15 days.

Y can finish the work in x - 3 = 15 - 3 = 12.

Hence, X and Y can individually finish the work in 15 or 12 days respectively.