If (a+b–c –5)² + (b+c–a–9)² +(c+a–b – 11)² = 0 then √a+b+c = ? (a) 6 (b) 4 (c) 2 (d) 5 Sol: a + b – c = 5 b + c – a = 9 c + a – b = 7 a + b + c = 25
If (a+b–c –5)² + (b+c–a–9)² +(c+a–b – 11)² = 0 then √a+b+c Read More »
A trader marks up in his goods by 120% and offers 30% discount. What will be the selling price (in Rs.), if the cost price is Rs. 1350? (a) Rs. 2059 (b) Rs. 2069 (c) Rs. 2079 (d) Rs. 2089 Sol:
Train A takes 45 minutes more than train B to travel a distance of 675 km. Due to engine trouble speed of train B falls by a quarter, so it takes 30 minutes more than train A to complete same journey. What is the speed of train A (in km/h)? (a) 150 (b) 125 (c)
Two dice are thrown. Find the probability that a multiple of 3 occurs on one dice and a multiple of 2 occurs on the other. (a) 1/2 (b) 13/36 (c) 1/3 (d) 11/36 Sol: We have a total of 11 favorable cases viz. 2,3 2,6, 4,3 4,6 6,3 3,6 6,4 3,4 6,2 3,2 and 6,6
Alloy A contains copper and zinc in the ratio of 4: 3 and alloy B contains copper and zinc in the ratio 5:2. A and B are taken in the ratio of 5: 7 and melted to form a new alloy. The percentage of zinc is the new alloy as closest to (a) 34.5% (b)
Find the mean of the first 10 even integers. (a) 11 (b) 9 (c) 12 (d) 10 Sol: First 10 odd integers: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20 Mean = Sum of the first 10 odd integers/Number of such integers = (2 + 4 + 6 + 8 + 10 +
If A had worked alone he would have taken 63 hours to do the task. What is B’s share, if A and B together on a task finishing it in 36 hours and they get paid Rs. 9275 for it? (a) Rs. 3951 (b) Rs. 3975 (c) Rs. 3999 (d) Rs. 4056 Sol:
If A had worked alone he would have taken 63 hours to do the task. What is B’s share Read More »
The single discount equal to three consecutive discounts of 10%, 12% and 5%? (a) 37% (b) 24.76% (c) 22.14% (d) 32% Sol: (1238/5000)x100= 24.76%
The single discount equal to three consecutive discounts of 10%, 12% and 5% Read More »
A and B started a business by investing Rs. 36000 and Rs. 45000 respectively. After 4 months B withdrawals 4/9 of his investment. After 5 months from the withdrawal, B again invested 11/9 of its original investment. If the total earned profit at the end of the year is Rs. 117240, then who will get
Piyush has a box in which he kept red and blue marbles. The red marbles and blue marbles were in the ratio 5:4. After he lost 15 red marbles, the ratio becomes 10: 9. How many marbles does he have now? (a) 76 (b) 152 (c) 228 (d) 102 Sol: =228
