52) 115-3=112 that were given away Now divide 112 by each, seeing if they give you a non mixed number. The only one that would give you a full number would be 28. So there are 28 kids in his class. 54) 19-4=15 Now double 15 since he sold half, so he started with 30 stamps originally. 56) 500-2*=324 -2*=-176 age=88
