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Q10) The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is 1) 35.2 2) 34.1 3) 36.5 4) 39.1 Solution: Hence, option 3. Question Level: Easy Q11) A man sold 2 watches for Rs 3750 each; on one he gained 5% and on the other he lost 5%. What was his total gain or loss as a percentage? 1) 0.25% loss 2) 2.5% loss 3) 25% gain 4) 12.5% gain Solution: Hence, option 1. Question Level: Easy Q12) The average score of a cricketer for 10 matches is 38.9 runs. If the average for the first six matches is 42, the average for the last four matches is 1) 33.25 2) 33.5 3) 34.25 4) 35 Solution: Hence, option 3. Question Level: Easy 1) 480 2) 500 3) 420 4) 520 Solution: Hence, option 1. Question Level: Medium Q14) By selling a chair for Rs 368, a man lost 8%. For how much should have he sold it to gain 15%? 1) Rs 450 2) Rs 475 3) Rs 460 4) Rs 500 Solution: Hence, option 3. Question Level: Easy Q15) A worker may claim Rs 1.5 for each km which he travels by taxi and 50 paise for each km he drives his own car. If in one week he claimed Rs 50 for travelling 80 Km, how many kms did he travel by taxi? 1) 20 Km 2) 14 Km 3) 12 Km 4) 10 Km Solution: Hence, option 4. Question Level: Easy 1) Rs 1100 2) Rs 1200 3) Rs 1000 4) Rs 900 Solution: Hence, option 2. Question Level: Medium Q17) On a certain sum, the simple interest at the end of 6.25 years becomes 3/8th of the sum. The rate percent is 1) 7% 2) 6% 3) 5% 4) 5.5% Solution: Hence, option 2. Question Level: Easy Q18) In an examination, a student was asked to find 3/14 of a certain number. NBy mistake, he found 3/4 of it. His answer was 150 more than the correct answer. Find the number. 1) 180 2) 280 3) 380 4) 480 Solution: Hence, option 2. Question Level: Medium |