Question
The speed of current is 22 km/hr. If the speed of the
boat in still water had been 25 km/hr more than the original speed then it would take 5.5 hours to cover 308 km in downstream. Find the original speed of the boat in still water (in km/h).Solution
Let the speed of the boat in still water be ‘x’ km/hr According to the question, (x + 25 + 22) = 308/5.5 Or, x = 56 – 47 = 9
The sum of three consecutive natural numbers each divisible by 5, is 255. The largest among them is:
The sum of (p/q)+(q/r)+(r/s)+(s/t) = (239/60). The value of ‘q’ is one less than the value of ‘s’. The average of ‘p’ and ‘s’ is 4. The ...
Evaluate 2.5 ÷ 0.0005.
- A number gives a remainder of 19 when divided by 50. Find the remainder when the same number is divided by 25.
A boy initially has 350 candies. He shares 'c%' of his candies with his friends. Later, his mother gives him 'c' additional candies. Calculate the total...
Find the highest common divisor of 1080, 2700, and 6480.
How many Zeros can be formed by multiplying 10×20×30×40×…………….× 3000
The cost of 3 notebooks and 2 erasers is Rs.47, and the cost of 5 notebooks and 4 erasers is Rs.83. What is the total price (in Rs) of 2 notebooks and 3...
- The average of five consecutive numbers is 23. Find the middle number.
If a number is decreased by 8 and divided by 12, the result is 16. What would be the result if 10 is subtracted from the number and then it is divided ...
Relevant for Exams:
