+0  
 
+1
95
5
avatar+74 

There are two number A and B. A is a 2-digit number which is a multiple of 8. B is a 2-digit number which is a multiple of 20. What is the largest possible difference between the two numbers A and B?

 Apr 20, 2021
 #1
avatar+507 
+1

The largest possible difference is 12x8-1x20=96-20=76, not 4x20-2x8=64, which is less than 76.

 Apr 20, 2021
 #2
avatar+290 
+1

Smallest A --> 8 * 2 = 16

Largest A --> 8 * 12 = 96

Smallest B --> 20 * 1 = 20

Largest B --> 20 * 4 = 80

Difference between Largest A and Smallest B 

= 96 - 20

= 76

Difference between Largest B and Smallest A

= 80 - 16

= 64

Largest possible difference = 76.

 Apr 20, 2021
 #3
avatar+33803 
0

A = 96   B = - 80     difference = 176

 Apr 20, 2021
 #4
avatar+507 
0

Hmm... you could be right...

 Apr 20, 2021
 #5
avatar+74 
0

Actually 76 was right :)

RunningManZZ  Apr 20, 2021

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