Question

Example 18: Satish can paint a house in 6 days,
while Ritesh takes 12 days to do it alone. If both
of them work together, how long will they take to
paint the house?​

Answer 1

Answer:

4Days

Step-by-step explanation:

satish in 6 days

Ritesh in 12 days

Take lcm of 6 and 12

then,

satish+Ritesh both of them work together in 12÷3

=4 days

Answer 2

Answer:

4

Step-by-step explanation:

Let ? = x

Satish Per day work ⇒ X/6

Ritesh Per day work ⇒ X/12

So, N x X/6 + N x X/12 = X

N.X ( 1/6 + 1/12 ) = X

X is removed.

N. ( 2+1/12 ) = 1

Because X = 1 only.

N . 1/4 = 1

N = 4

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