Question

Problem Solving :(

Answer 1

one way to do these is to first work out what fraction of the building does each one paint in one hour
Ted does whole building in 11 hours so in 1 hour he does 1/11 of building
similarly Linda does 1/8 of building in i hour
So working together they do 1/x of the building in one hour where x = time to do the whole building when they work together

so can you see which option is correct?

Answer 2

you have 1/11, 1/8 and 1/x

Answer 3

So it's D?

Answer 4

@wrik003

Answer 5

yes

Answer 6

OK?

Answer 7

1/7 + 1/4 = 1/x
solve for x

Answer 8

the 4th option is correct... this is an example of Time & Work... check similar examples in your textbooks or on the internet @KittyT.

Answer 9

From the equation of @welshfella . I got the answer is 28/11 = 2.5 (like my answer)

Answer 10

@mathmate
Which one are you agree with?

Answer 11

yes tha'ts correct it actually comes to 2 6/11 but they asked for an approximate value

Answer 12

7... since for b = 7 the left hand side becomes infinity

Answer 13

So I got it?

Answer 14

yeah!

Answer 15

btw... are these questions part of assignments from your school? just asking