Question
Speed of boat is 15 km/hr. Speed of the stream is 20%
less than speed of boat. Then find time taken by boat to go 81 km downstream?Solution
Speed of stream = 15 × (80/100) = 12 km/hr Time taken to go 81 km = 81/(15 + 12) = 3 hrs
In an examination, the number of those who have passed and the number of those who failed were in the ratio of 40 : 7. If 7 more had appeared and the nu...
In a division sum, the divisor is 12 times the quotient and 4 times the remainder. If the remainder is 72, the dividend is?
28% of a certain number is added to 82% of the same number, resulting in 125% of 484. If 150 is subtracted from this number, what is 35% of the resultin...
If the 6-digit number '5a1897' is divisible by '11', determine the value of 'a'.
In a class, 2/5 of the students are girls and rest are boys. If 4/9 of the girls and 1/3 of the boys are absent, what part of the total number of studen...
- A number when divided by 221 gives a remainder 13. What will be the remainder when the same number is divided by 13?
Out of four numbers the average of the first three is 16 and that of the last three is 15. If the last number is 20 then the first number is
Evaluate 2.5 ÷ 0.0005.Â
Find the sum of the first 70 natural numbers.
Nine numbers are arranged in decreasing order. The average of the first eight numbers is 50, and the average of the last eight numbers is 45. What is th...
Relevant for Exams:
