Question

Linda, Aldo, and bob have a total of 70 in their wallets. Bob has 3 times what Linda has. Linda has 5 more than Aldo. How much do they have in their wallets?

Answer 1

L, A, B = the amount of money each person has.
L + A + B = 70
B = 3L
L = A +5 or A = L-5 
Set up an equation in L only:
L + L - 5 +3L =70
5L -5 = 70
5L =75
L = 15
follows
B=3*15 =45
A = 15 - 5 = 10