Question

a number is as much greater than 21 as is less than 71.find the number

Answer 1

WRITE the numbers on a horizontal line
       21  ------------------------  X ---------------------------------- 71

 X is as much greater than 21 as it is less than 71.

It means X is in the center of the two numbers: 21 and 71.

So X  =  ( 21 + 71 ) /2  =  92 / 2  =  46
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USUAL method

   X - 21  =  71 - X            take - X to L H S and bring - 21 to R H S

   So  X + X  =  71 + 21

         2 X = 92                    X = 92 /2 =  46

Answer 2

Answer:

46

Step-by-step explanation:

Let the number be x

then, we have:

( x- 21 ) = (71 - x)

x +x = 71 + 21

2x = 92

2x= 46

So, required number is 46