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ATQ, Mean proportion of (x, y) = √xy So, required mean proportion = √(72 × 50) = √3600 = 60
The average age of a group of 5 men is 30 years. If one man aged 35 leaves and a new person joins the group, raising the average age by 1 year, find the...
A car travels 60 km at a speed of 40 km/h and another 90 km at a speed of 60 km/h. What is the average speed of the car for the entire journey?
If (a + b) = 8 and ab = 10, then find the value of (a2 + b2).
What is the total amount allocated to Research and Development and Operations combined?
A man invested ₹12,000 in a business, and his partner invested ₹15,000. After 8 months, the first partner withdrew half of his investment. If the t...
A car covers a distance of 450 km at a constant speed. If the car’s speed had been 15 km/h faster, it would have taken 1 hour less to cover the same d...
A shopkeeper marks up the price of an article by 50% and offers two successive discounts of 20% and 15% and gain ₹80, then find the cost price of the ...
120 litres of mixture contains water and milk in the ratio 5:6 respectively. If 32 litres of the mixture is replaced by same quantity of water, then fin...
A container holds a mixture of milk and water in a 5:3 ratio. If 16 liters of the mixture is taken out and replaced with 16 liters of water, the ratio o...
A train travels at 72 km/h and crosses a platform of length 150 meters in 30 seconds. Find the length of the train.
