Question

Time and work

Answer 1

\(A\) can make a wall in \(12\) days and \(B\) can destroy the same wall in \(15\), if
both work on alternate days starting from \(A\), In how many days will the wall be made ?

Answer 2

How much of the wall can A make in 1 day?

Answer 3

Hello? Are you there?

Answer 4

@mathmath333

Answer 5

1/12

Answer 6

Now how much would B destroy on day 2

Answer 7

1/15

Answer 8

Now find the LCD

Answer 9

60

Answer 10

So now how much would be made on the first day

Answer 11

idk

Answer 12

how many times does 12 go into 60?

Answer 13

5

Answer 14

So if 12 x 5 equals 60
what's 1 x 5?

Answer 15

5

Answer 16

So now how much would A have built on the first day

Answer 17

1/12

Answer 18

No using the LCD how much would A have built on the first day?

Answer 19

5

Answer 20

find x and it's done

Answer 21

5/60 would be it with the LCD

Answer 22

Now how many times does 15 go into 60?

Answer 23

4

Answer 24

so now what's 1 x 4?

Answer 25

4

Answer 26

So what's the new amount it would destroy?

Answer 27

@sparrow2 x=60 comes from ur equation and that is wrong :/

Answer 28

4

Answer 29

4/60