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Let A’s age be 4x and B’s age be 3x. 4x - 3x = 5; x = 5. Therefore, B’s age = 3x = 3 × 5 = 15 years. Answer: b) 15 years
The average number of taxis of three colours (black, white and yellow) in a taxi stand is 130. The number of black taxis is 70 more than that of yellow ...
C purchased 20 kg of oranges at the rate of ₹150 per kg from a wholesaler who uses a weight of 850 grams for the kg weight. C sold all these oranges a...
One type of liquid contains 15% of benzene, the other contains 20% of benzene. A can is filled with 6 parts of the first liquid and 4 parts of the secon...
If p = 50 - q - r and pq + r(q + p) = 816 then find the value of (p2 + q2 + r2) .
The average wage of a group of 23 labourers is Rs. 460. If 4 persons receiving average wage of Rs. 350 leave the group and 2 persons receiving average w...
In a class, 60% of the students are boys, and the rest are girls. If 40% of the boys and 50% of the girls passed an exam, what percentage of the total s...
12, 13, 22, 47, 96, ?
‘A’ and ‘B’ can do a piece of work in 25 days and 30 days, respectively. If they started the work together and worked on it for 5 days, then fin...
In a jar initially containing 'm' liters of pure milk costing Rs. 20 per liter, 50% of the milk is taken out, and honey is added to the remaining milk. ...
What distance will a wheel with a radius of 14 cm cover after completing 10 revolutions?