Q. 3 friends A, B and C invested in a start-up. The investment of B was 8.33% more than that of A and the investment of C was 16.66% more than that of A. the ratio of months for which A, B and C invested was 3:2:4. If B gets a share of profit which […]
Find the value of Sin²(57.37°)+ Sin²(32.63°) + cot²(65.43°). sec² (65.43°) – tan²(24.57°) (a) 0 (b) 1 (c) -1 (d) 2 Sol: sin²A + Sin²B = 1 [ when A + B = 90°] 1+cosec ²(65.43°) – cot²(65.43°) =1+1 =2
The average salary of all the employees in a company is Rs.14,000. The average salary of 5 technicians is Rs.18,000 and the average salary of the rest is Rs.13,200. The total number of employees in the company is. (a) 25 (b) 30 (c) 35 (d) 40 Sol: 140x=180×5+132(x-5) 140x=900+132x-660 8x=240 X=30
In a shop, a discount of 8% is provided. If the total payable after discount is more than 5,000 and additional discount of 20% is provided, then determine the final amount to be paid by customer. if he buys 12 products each of price 7750. (a) 6633 (b) 6624 (c) 6720 (d) 6890
A seller uses faulty weight in place of a 2 kg weight and earns a 25% profit. He claims that he is selling on the cost price in front of the customers but uses a faulty weight. How much error is there in the 2 kg weight to gain 25%? (a) 350 (b) 400 (c)
A cylindrical shaped roller has a diameter of 1.1 m. and length of 1.667m. if the speed at which the roller rolls is 10.5 revolutions per minute, then the maximum area (in m²) that it can role in an hour is (a) 3520 (b) 3740 (c) 3630 (d) 3850 Sol:
The number 79825x42y3 is divisible by 99. What is the geometric mean x and y? Sol: (24+y) – ( 16 + x ) → divisible by 11 (8 + y – x) ⇒ y – x = 3 or -8 (40 + x + y) → divisible by 9 ⇒ x + y = 5
The number 79825x42y3 is divisible by 99. What is the geometric mean x and y Read More »
Mr. X decides to travel from Delhi to Gurgaon at a uniform speed and decides to reach Gurgaon after T hr. After 30 km, there is some engine malfunction and the speed of the car becomes (4/5)th of the original speed. So, he travels the rest of the distance at a constant speed (4/5)th of
Arjun travels from A to B, a distance of 200 Km at the speed of 40 Km/hr. At the same time, Rakesh starts from point B at a speed of 20 Km/hr along a road which is perpendicular to AB. Find the time in which Arjun & Rakesh will be closer to each other? Ans:
Car A trails car B by 50 meters. Car B travels at 45km/hr. Car C travels from the opposite direction at 54km/hr. Car C is at a distance of 220 meters from Car B. If car A decides to overtake Car B before cars B and C cross each other, what is the minimum speed
