five years ago A was thrice as old as B and ten years later. A shall be twice as old as B. what is the present age of A
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1
Answer:
Correct option is
D
50,20
Let the age of A be a, and age of B be b
Now, a−5=3(b−5)
a=3b−10 (1)
After 10 years,
a+10=2(b+10)
a=2b+10 (2)
From 1 and 2,
3b−10=2b+10
b=20
And, a=2b+10=2×20+10=50 years
Thus, age of A = 50 years and age of B = 20 years
Answered by
1
Step-by-step explanation:
☆Let the age of A be a, and age of B be b
Now, a−5=3(b−5)
a=3b−10 (1)
After 10 years,
a+10=2(b+10)
a=2b+10 (2)
From 1 and 2,
3b−10=2b+10
b=20
And, a=2b+10=2×20+10=50 years
Thus, age of A = 50 years and age of B = 20 years.
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