Question

it takes Ron 12 hours to paint a house and it takes Rita 6 hours. How long should it take if they worked together?

A. None of these choices are correct
B. 18 hours
C. 3 hours
D. 9 hours
E. 4 hours

Answer 1

18

Answer 2

nope 18 only makes it longer. it should be shorter since they work together lol

Answer 3

9hours

Answer 4

(12+6)/2

Answer 5

but wait.....working together should take at most a shorter time than the fastest worker...

Answer 6

So I'm gonna stick with 4hours

Answer 7

@Dyiliq are you sure it's for a test and i don't want to fail

Answer 8

I couldn't give you a formula, but that seems reasonable... honestly, if she can do it in half the time he can do it, then both of them should be able to cut her time in half yet again
so maybe its 3 hours

Answer 9

it's 4 hours!!!!!!!!!!!11

Answer 10

yeah, ultimate answer: 3hours

Answer 11

4 hours and here's why:

Answer 12

i'm so confused now

Answer 13

If Ron can paint a house in 12 hours, then he can paint 1/12 of a house in 1 hour.

If Rita can paint a house in 6 hours, then he can paint 1/6 of a house in 1 hour.

Let x be the number of hours it would take them to paint the house.

Working together, they can paint 1/x of the house in one hour, so
1/12+ 1/6= 1/x
3/12= 1/x Solve fpr LCD
3x=12
x=4

Answer 14

@herschelle you're so smart

Answer 15

my bad i spelled that wrong

Answer 16

With a few help, of course. I didn't do all of it myself especially the verbosity (I'm kind of lazy)
rest assured the answer is 4
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