** 9) If 40 students sit for an aptitude test and 8 of them failed, what percentage of them passed the test?**

(A) 65%

(B) 70%

(C) 75%

(D) 80%

** 10) A man's new income is Rs. 8400 per month. Given that his original income was Rs. 7500 per month, find the percentage increase in his monthly income.**

(A) 11%

(B) 12%

(C) 13%

(D) 14%

** 11) A tour guide earns commission by bringing tourists to patronise a certain handicraft shop. Given that the commission he receives is 3% of the total sales. Calculate his commission on a particular day when the 12 tourists he brought to the shop spent an average of Rs. 2500 each.**

(A) Rs. 500

(B) Rs. 700

(C) Rs. 900

(D) Rs. 1000

** 12) If 10% is deducted from a bill, Rs. 585 remains to be paid. How much is the bill?**

(A) Rs. 650

(B) Rs. 700

(C) Rs. 675

(D) Rs. 750

** 13) The enrollment in a certain secondary school was 450 in 1979. By 1980 the enrollment had increased by 16%. What was the enrollment in 1980?**

(A) 512

(B) 518

(C) 522

(D) 525

** 14) 40 arithmetic questions, each carrying equal marks were given in a class test. A boy answered 25 questions correctly. What percentage was this? To pass a test a student must answer at least 45% of the questions correctly. Find the least number of correct answers needed to pass.**

(A) 62.5%, 18

(B) 64.5%, 22

(C) 66.5%, 22

(D) 68.5%, 18

** 15) A fruit seller has 120 oranges. Given that he has 20% more apples than oranges and 40% less oranges than pears, find the number of apples and the number of pears the fruit seller has?**

(A) 144, 200

(B) 148, 380

(C) 149, 220

(D) 140, 190

** 16) A boy scored 90 marks for his mathematics test. This was 20% more than what he had scored for the geography test. How much did he score in geography?**

(A) 71 marks

(B) 73 marks

(C) 75 marks

(D) 78 marks