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ATQ,
Let the actual speed of Rahul be ‘s’ km/hr. And, actual time taken by him to reach his destination is ‘t’ hours. So, total distance covered by Rahul in ‘t’ hours = {s × t} km---------- (1) Also, Distance covered by Rahul while travelling at 40% less speed = 60% of s × (t + 3) = 0.6 × s × (t + 3) km ----------- (2) From equation (1) and (2), we have s × t = (3/5) × s × (t + 3) Or, 5st = 3st + 9s Or, 2st = 9s So, t = 4.5 So, required time = 4.5 hours
A certain number gives a remainder of 8 when divided by 17. What will be the remainder when four times that number is divided by 17?
103² + 75² - 25² =?
16 4 2 1.5 1 1.875
...Christina spends half of her salary and saves the other half. If she spends ₹ 40,000 monthly, what is her annual savings?
Find the average of first 19 whole numbers.
The sum of a positive number 'A' and its square is 240. Find the value of (A2 - 7A).
If a, 1, b are in arithmetic progression and 1, a, b are in geometric progression, then a and b are respectively equate to _______ (where a ≠ b).
Divide 54 into 4 parts such that if the first is increased by 2, the second is decreased by 2, the third is multiplied by 2 and the fourth divided by ...
A person had to multiply two numbers. Instead of multiplying by 46, the person multiplied by 64, and the product went up by 360. What is the raised pro...
