2012 RRB Ahmedabad

Question 37

There is an article of Rs. 100. Its price is raised initially by 10% and then again by 10%. How many rupees have been increased ?

Solution

Cost of the article is 100 Rs. Initial increase = 10% 

So, cost = 100 * 110/100 = 110 Rs

Second increase = 10 % 

So, cost = 110 * 110/100 = 121

Total increase = 121 - 100 = 21 rupees


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