How many minutes will Radha take to cover a distance of 1950 m, if she runs at a speed of 26 km/h? Options a) $ 7 \frac 12 $ minutesb) $ 4 \frac 12 $ minutesc) $ 3 \frac 12 $ minutesd) $ 5 \frac 12 $ minutes Solution As per question D = 1950 […]
If the average of two numbers is 13 and the square root of their product is 12, then the difference between the numbers is: Options:a) 8b) 18c) 10d) 12 Solution: Let the two numbers are = a and bAverage of number = $ \frac{a+b}{2}=13$a+b =26Product = $ \sqrt{a \times b} =12$a x b =144 Formula
Five years ago, the average age of A, B and C was 20 years. Six years ago, the average age of B and C was 9 years. What will be the age (in years) of A after 3 years from now? Options a) 41b) 48c) 45d) 47 Solution As per question 5 years ago ,Average
The marked price of an article is Rs 550. It is sold for Rs 317.90, after giving three successive discounts of 15%, x% and 20% on its marked price. If it is sold by giving a single discount of 2x%, then its selling price (in Rs) will be : Options a) 340b) 385c) 495d) 484 Solution As
A shopkeeper sold an article at a gain of 20%. Had he bought it for 20% less than the original cost and sold it for Rs 10 less, he would have gained 25%. Then the Cost Price of the article is: Options:a) Rs 45b) Rs 60c) Rs 50d) Rs 40 Solution Assume Cost Price (CP)
Pipes A and B can empty a full tank in 15 minutes and 20 minutes, respectively, while pipe C alone can fill the empty tank in 8 minutes. If pipes A, B and C are opened together, then in how many hours will the tank be filled? Options a) 2.5b) 1.5c) 2d) 3 Solution As
A factory requires 56 machines to manufacture a given number of articles in 144 days. How many machines will be required to produce the same number of articles in 96 days? Optionsa) 63b) 84c) 77d) 81 Solutions As per questionNo. of machine = 56Days = 144$ \frac {M_1 \times D_1}{W_1} $ = $ \frac {M_2
The average height of 20 students of class 8 is 152 cm and the average height of 15 students of class 9 is 168 cm. What is the average height (to the nearest cm) of the students of both classes? Options a) 159b) 160c) 157d) 158 Solution As per questionThe average height of 20 students
A sum of Rs 73,500 is divided among A, B, C and D in the ratio 3 : 7 : 9 : 11, respectively, What is the sum of the shares of A and D? Options a) Rs. 34,300b) Rs. 39,200c) Rs. 24,500d) Rs. 29,400 Solution As per question Amount = 73500A : B :
The value of $ \dfrac {(251)^3 +(249)^3}{25.1 \times 25.1 – 624.99 + 24.9 \times 24.9}$ is $ 5 \times 10^k$, where the value of k is : Options a) 4b) 6c) 3d) 5 Solution As per question$ \dfrac {(251)^3 +(249)^3}{25.1 \times 25.1 – 624.99 + 24.9 \times 24.9} = 5 \times 10^k$ Let value of a