Question

a+b=150,
a is twice as big as b. find a & b.​

Answer 1

If a is x then b is half of a ie. x/2

a+b= 150

x+x/2= 150

3x/2= 150

x=(150×2)/3

x= 100.

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Answer 2

If a is twice as big as b

then,

a=2*b

a=2b

then,

2b+b=150

3b=150

b=150/3

b=50

then,

a=2*50

a=100