Question 935266
'Jane brought a packet of sweets.
A quarter of them were green, a third of them were red and the rest were yellow.
There were 10 yellow sweets.

What was the total number of sweets in the packet?'

I tried starting with different numbers like 40
This is what is did afterwards 
 
40-10=30
30-1/3=20
20-1/4=15
and that didn't leave me with Zero.
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T = Total
(1/4)T + (1/3)T + 10 = T
7T/12 + 10 = T
7T + 120 = 12T
5T = 120
T = 24