Question
5 positive numbers are written on a piece of paper. Sum
of first 3 numbers is 40 and ratio of the 4th and the 5th number is 2:3. If difference between the 4th and the 5th number is 17, then find the average of all the numbers.Solution
Given, 4th number:5th number = 2:3 Let, 4th number = 2x 5th number = 3x So, 3x – 2x = 17 Or, x = 17 Required average = {(40 + 17 × 2 + 17 × 3)/5} = (125/5) = 25
If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same -
Lakes freeze in cold countries in winter, leaving the water underneath at –
Which element is the constituent of the chlorophyll molecule?
With increase in impurities, the boiling point of water _________?
Marbles come under which category of rockes?
The moment of inertia of a hollow sphere of mass M and radius R about its diameterÂ
Tendons and Ligaments are
Which of the following is not an equation of motion?
What is used in cloud seeding to produce artificial rain?
Relevant for Exams:
