Question

"Jack spends 1 1/2 as long on his homework as Jill. Last week Jill spent 9 1/2 hours doing homework. How long did Jack spend doing homework?"

Answer 1

If x = time Jack spends on homework
y=time Jill spends on homework
x=(1 1/2) * y
y= 9 1/2 hours
solve for x

Answer 2

ahh so its jacks times Jills so i would have to divide Jills by 1 1/2? :)

Answer 3

If Jack spends 1 1/2 as much time as Jill, you would multiply Jill's time by 1 1/2. So if Jill spends an hour doing homework, Jack spends 1 1/2 hours. So if Jill spends 9 1/2 hours doing homework, how much time does Jack spend?

Answer 4

1/2 longer than Jill

Answer 5

yes, how many hours does Jack spend if Jill spends 9 1/2 hours?

Answer 6

well the question initially said 1 1/5 not 1 1/2 so the answer to that would be 7 11/12??

Answer 7

If Jack spends 1 1/5 as much time as Jill and Jill spends 9 1/2 hours:
Jack's time = (1 1/5) times (9 1/2) = ?
The answer must be greater than 9 1/2 hours.

Answer 8

ahhhh :S whats the answer ?

Answer 9

11.4

Answer 10

Yes! Correct!

Answer 11

so 11 2/5

Answer 12

Yep

Answer 13

part b =
"the week before, jack spent 21 3/4 hours on homework. how long did Jill spend?"

Answer 14

Assuming Jack still takes 1 1/5 times as long as Jill, you can use the same equation as the last time
x= (1 1/5) * y where x is Jack's time and y is Jill's time
y = x/ (1 1/5) = (21 3/4) / ( 1 1/5) = ?
you find Jill's time by dividing Jack's time by 1 1/5.

Answer 15

okay i'll tryy :/

Answer 16

You can do it.

Answer 17

i cant!!!!

Answer 18

843/4 / 6/5
then
843/4 x 5/6
am i getting there?

Answer 19

very close....21 3/4 = 87/4 and then you do as you wrote
87/4 x 5/6 = answer!

Answer 20

ahhh, slipped up slightly :L the answer is...
75/24 =
3 3/24 =
3 1/8

Answer 21

or 21 3/4 - 3 1/8

Answer 22

I got
87/4 x 5/6 = 435/24 = 18 3/4

Answer 23

ah right, i see where i went wrong... Thanks :D Id give you 100 medals if i could !!! :)

Answer 24

Thanks but not necessary.

Answer 25

whattt!!! it was wrong!! (the we we just did )

Answer 26

Shoot. I will check my math again.

Answer 27

yeh but that means i need to do all of it again becasue its on mymaths :SSSSSSS!!!!

Answer 28

I just did it another way and got 17 2/5. Does that seem right?

Answer 29

im not sure, im doing it again now but its a different question this time :L

Answer 30

whats 16.1388888 reccurring as a fraction?

Answer 31

I checked up my math and this time I got 18 1/8.

Answer 32

doesn't matter now though!!

Answer 33

I can't find an answer to the recurring decimal to fraction question.

Answer 34

its fine