Question

How many grams of Carbon are in a 240g sample of C8H12O10?

Answer 1

Explanation:

Let x is the time it takes 1 man, 1 woman and 1 boy to do the piece of work

One man works at the rate of

44

1

of the piece of work per day

One women works at the rate of

2×44

1

=

88

1

of the piece of work per day

One boy works at the rate of

3×44

1

=

132

1

of the piece of work per day

So, to complete the piece of work we can write the equation as

44

1

x+

88

1

x+

132

1

x=1

⟹x=24

Therefore 1 man, 1 woman and 1 boy can do the same piece of work in 24days