I think this should be under math. So let's say that you have tons of data and you need to sort it. A chart will help to graph that data in an organized formation.
Answer: 50
Explanation: let amit's current age = a and armaan's current age be b.
(a-5) = 3* (b-5)
i.e. a= 3b-10 -(i)
10 years later,
(a+10) = 2(b+10)
i.e. a=2b+10 -(ii)
From eqn (i) and (ii),
b=20,
and a=50
Explanation:
the process of displaying the information from the table is called query
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