90 marbles are shared among 3 friends. Dave gets 10 more than Lall, who gets 10 more than lee. How much does dave get?

Answer 1

I'll be glad to check your answer.

Answer 2

40

Answer 3

If Dave gets 40, then Lall gets 30, and Lee gets 20.

Yep, that checks!

Answer 4

thank u Ms. Sue

Answer 5

You're welcome, Joshua.

Answer 6

method:
lee ---- x
lal ---- x+10
dave --> (x+10) + 10 = x+20

x + x+10 + x+20 = 90
3x = 60
x = 20

etc