Question

if a and b are two positive number such that a+b=640,where a is 100 greater than b,then find a and b.

Answer 1

Given that a is 100 greater than b
So a = b + 100
now put this in the equation,
a + b = 640
Put a = b + 100
So, b + 100 + b = 640
b = 270

Answer 2

LET'S CONSIDER ,

b = x , a = x+100

x + x+ 100 = 640

2x + 100 = 640

2x = 640 - 100

2x = 540

x = 540 divided by 2

x = 270

b = x = 270

a = x + 100 = 270 + 100 = 370

THEREFORE ,

a = 370 & b = 270

a+b = 640

370 + 270 = 640.

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