Lets x = number of books read in that month
2x + 40 = 3x +35
3x - 2x = 40 -35
x = 5
answer is H. 5
You got it right
- Ravi earns per month=Rs4300
- Spends=80%
Saving percentage=100-80=20%
Saving amount:-
<h3>saving per year=Saving per month×12</h3>
Answer:
B. A water wheel in a dry river
Step-by-step explanation:
Work is said to be done when a force moves a body or an object through a certain distance in the direction of the force. Thus for work to be done, force and distance are required.
i.e Work done = Force x distance
It is measured in Joules.
Also, the work done by an object could be a measured of potential energy.
So that,
Work done = potential energy = mass x gravitational force x height
Considering the collage in the question, since the water wheel is in a dry river no work is done. Water wheel is a device that functions through the flow of water body, thus causing its rotation.
You take the total number of picture and multiply it by .12, which will get you the total number of black and white photos only.
600(.12)= 72
