Question

if x is 20% less than Y find x/y , -x/y , x/x-y​

Answer 1

Answer:

A & B working together do work in 6 days.

A takes 5 days less than B.

Let B takes x

⇒A=x−5

x

1

+

x−5

1

=

6

1

x

2

−5x

x−5+x

=

6

1

12x−30=x

2

−5x

x

2

−17x+30=0

x

2

−15x−2x+30=0

x(x−15)−2(x−15)=0

(x−2)(x−15)=0

⇒x=2 or x=15

As, x<5 so x=15

then A=10 days &B=15 days

Hence, the answer is 10,15days.