10 years ago b is twice of
a. now, ratio of a and b is 3:4.what is the total value of a and b?
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let the age of a be 3x
hence the age of b be 4x
10 years ago their age will be :
3x-10 for a
4x-10 for b
4x-10=2(3x-10)
4x-10=6x-20
6x-4x=20-10
2x=10
x=10/3=5
hence present age of a be 3x=3×5=15
hence present age of b be 4x=4×5=20
hope it helped you
hence the age of b be 4x
10 years ago their age will be :
3x-10 for a
4x-10 for b
4x-10=2(3x-10)
4x-10=6x-20
6x-4x=20-10
2x=10
x=10/3=5
hence present age of a be 3x=3×5=15
hence present age of b be 4x=4×5=20
hope it helped you
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