If Jack gives 10 of his stickers to Sharif, Sharif will have 1/4 as many stickers as Jack. If Jack gives 34 of his stickers to Sharif, Sharif will have 1/2 as many stickers as Jack. How many stickers does Jack have?
Initially : 1/4 (j-10) = s+10 or s = 1/4j -12.5
Then 1/2 ( j-34) = s+34 sub in the RED equation above for 's' then solve for j
j = 154
s = 26