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Upstream speed = 240 / 5 = 48 km/h Downstream speed = 360 / 5 = 72 km/h Speed in still water = (48 + 72) / 2 = 60 km/h Required time = 300 / 60 = 5 hours
The difference between the value of the number increased by 20% and the value of the number decreased by 30% is 120. Find the number.
Determine the unit digit of the product: 785×6194×319×1296
How many numbers in the range from 200 to 800 are divisible by 4, 8, and 16?
How many Zeros can be formed by multiplying 10 times; 20 times; 30 times; 40 times; ...............times; 2000?
What is the smallest four-digit number that can be evenly divided by 20, 24, and 36?
If the numerator of a fraction is increased by 300% and the denominator is increase by 600%.The resultant fraction is 1/2. What was the original fraction?
The natural numbers 'P', 'Q', and 'R' satisfy the ratios P:Q = 2:3 and Q:R = 5:4. Which of the following could be a possible valu...
If the largest three – digit number is subtracted from the smallest five – digit number, then the remainder is
Which of the following number is rational number?
