Chance can wash the car in 2 hours, while Sandy can wash the same car in 4 hours. How many hours would it take for them to wash the car together?

four thirds

three fourths

3

4

Question

Chance can wash the car in 2 hours, while Sandy can wash the same car in 4 hours. How many hours would it take for them to wash the car together?

 four thirds

 three fourths

 3

 4

anonymous · Answer

Think you can help me @ganeshie8

anonymous · Answer

yes no maybe @ganeshie8

ganeshie8 · Answer

thinking lol.. this prob is spinning my head -.- gimme time to think a bit :)

ganeshie8 · Answer

Chance can wash the car in 2 hours

that means he can complete 1/2 of work in 1 hour

ganeshie8 · Answer

Sandy can wash the same car in 4 hours.

that means he can complete 1/4 of work in 1 hour

ganeshie8 · Answer

say, both together completes the work in $x$ hours

ganeshie8 · Answer

then,

$\large   \frac{1}{2} + \frac{1}{4} = \frac{1}{x}$

ganeshie8 · Answer

solve  $x$

ganeshie8 · Answer

see if u can solve $x$ ...

anonymous · Answer

what i did was multiply 1*2/2*2 = 2/4 then I added that with 1/4 and I got 3/4 @ganeshie8

ganeshie8 · Answer

$\large \frac{3}{4} = \frac{1}{x}$

$\large  x = \frac{4}{3} $