+0  
 
0
55
1
avatar

Timmy went into a store and said "I'll buy that calculator for $10 if you lend me as much money as I have in my pocket. The clerk lent him the money and Timmy gave him $10 cash. He went to the next store and bought a $10 cap using the same gambit. Then he bought a $10 umbrella with the same strategy. When he paid for the umbrella, he had no money left. How much did he start out with?

 Aug 31, 2020
 #1
avatar
0

2 a - 10 = b
2 b - 10 = c
2 c - 10 = 0 for a, b, c

 

a =$8.75  What he started with.

b =$7.50  What he had left at the 2nd store

c =$5.00  What he had left at the 3rd store.

 Aug 31, 2020

11 Online Users

avatar