Question

the price of an item was 10 rupes in 1990?its price has raisen by 2rupes in every year?if this trend continue what year the price will be 100 rupees?

Answer 1

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Answer 2

The price will be 100 rupees in 46 years

Step-by-step explanation:

The price of an item was 10 rupees in 1990

Its price has raisen by 2 rupees in every year

So, it forms AP

AP : 10 , 12, 14, 16, 18 , ......

So, a = first term = 10

d = common difference = 2

Formula of nth term =$a_n=a+(n-1)d$

We are supposed to find if this trend continue what year the price will be 100 rupees

So, $100=10+(n-1)(2)\\90=(n-1)(2)\\46=n$

Hence the price will be 100 rupees in 46 years

#Learn more :

In an AP a ratio of 5th and 10 th term is 1:2 and 12 th term is 36 find the AP​

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