Bob and Bot

Algebra Level 1

Bob and Bot went to a Candy factory. Bob got 20 chocolate bars and Bot got 16 chocolate bars.
Bob gave 4 chocolate bars to Bot. Bot gave 2 chocolate bars to Bob.
Bob gave 3 chocolate bars to his friend and Bot gave 4 chocolate bars to her father.

How many candy bars does Bob now have?

18 29 20 15

Kohei Ishikawa by Kohei Ishikawa , 21, Netherlands

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3 solutions

Queenie Santos
Jan 26, 2017

Since the problem is how many chocolates Bob had, focus on the number of chocolate bars he gave and received. Bob has 20 chocolate bars. He gave four. 20 - 4 = 16

Bot gave 2 to Bob 16 + 2 = 18

Bob gave 3 18 - 3 = 15

The 4 chocolates that Bot gave is for his father, not to Bob. So Bob has now 15 chocolate bars.

4 Helpful 0 Interesting 0 Brilliant 0 Confused
Syed Hissaan
Feb 10, 2017

let bob = b b and bot = t t ; according to given condition :

b = 20 − 4 + 2 − 3 = > 15 ; b= 20-4+2-3=> 15;

t = 16 + 4 − 2 − 4 = > 14 t=16+4-2-4=>14

so 15 is our answer .

2 Helpful 0 Interesting 0 Brilliant 0 Confused

Bob started with 20 20 chocolate bars and Bot started with 16 16 chocolate bars.

Bob = 20 - 4 + 2 - 3 = 15

Bot = 16 + 4 - 2 - 4 = 14

2 Helpful 0 Interesting 0 Brilliant 0 Confused

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