Question

Long Answer type questions :-


i) Aman’s monthly income is Rs. 32,000. If his income increases every year by 9%. What will be

his monthly income after 2 years.

ii) A number is first increased by 20% and then decreased by 20%. Find the net increase and

decrease percent.

iii) A retailer wants to get a profit of 10% after giving a discount of 12.5% on an article. What

should be the marked price of the article whose cost price is Rs. 1470 ?

iv) Find the sum of money on which the difference between compound interest and simple interest

at the ratio of 10% per annum for 2 years is Rs. 500.​

Answer 1

Answer: AMAN'S YEARLY INCOME IN 2 YEARS INCLUDING HIS INCREASE IN MONEY IS RS. 6912,0.

Step-by-step explanation:

n.o of months in a year                                 = 12

monthly income                                             = Rs. 32,000

therefore, Aman's yearly income               = Rs. 32,000 x 12

                                                                    = Rs. 384,000

increase in income                  = 384,000 x 9/100

                                                 = 384,0 x 9

                                                 = 3456,0

therefore, Aman's income in two years including his increase

                                                                               = 3456,0 x 2

                                                                               = Rs. 6912,0