word problems with fractions

[will99]

Carla sold 3/4 of the pebbles on monday and she sold 2/3 of the rest of them on Tuesday. On Wednesday she had 8 pebbles left. How many she originally had?

I tried but i cant figure it out... Some help understanding the steps please would be appreciated!

Thanks

William

 

[will99]

EXAMPLE (make it 20 pebbles left)

Carla sold 3/4 of the pebbles on Monday and she sold 2/3 of the rest of them on Tuesday.
On Wednesday she had 20 pebbles left. How many she originally had?

start 240
-3/4 : 60
-2/3 : 20

Try going backwards...

well, i was hoping to have the steps to arrive to 20 and not only the answers but thanks anyways!

William!

 

[stapel]

I tried but i cant figure it out...

What did you try? What did you get? Where did you get stuck?

Carla sold 3/4 of the pebbles on monday and she sold 2/3 of the rest of them on Tuesday. On Wednesday she had 8 pebbles left. How many she originally had?

If she sold 2/3 at the last step, what fraction did she not sell? Since 8 is this unsold fraction, how many had she had before selling that 2/3?

If she sold 3/4 before that, what fraction did she not sell? Since your amount at the last step is this unsold fraction, how many had she had before selling that 3/4?