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Subject :IMO    Class : Class 8

The sum of two 2-digit numbers is 25 and their difference is 1. The two numbers are

A10, 15
B16, 9
C12, 13
D14, 11


Ans 1:

Class : Class 8
And is option C

Ans 2:

Class : Class 8
And is option C

Ans 3:

Class : Class 9
LET THE NUMBER BE X AND Y X-Y=1 X=Y+1 GIVEN X+Y=25 EQUATE X AS Y+1 Y+1+Y=25 2Y+1=25 2Y=24 Y=12 X=25-Y=13 ANSWER IS C-12,13

Ans 4:

Class : Class 9
C

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