Question
Abhinav bought some pencils for ₹ X. He sold 20% of
pencils at 25% loss, one third at 20% profit and the remaining at 25% profit. If the total profit earned by him on selling all the pencils is ₹208, then find the value of X (in₹)Solution
Let the number of pencils =300 sold 20% of pencils at 25% loss=300× (20/100) =60× (75/100) =45 one third at 20% profit=300× (1/3) =100× (120/100) =120 and now remaining pencils =300-(60+100) =140 140 pencils sold on 25% profit =140×125/100=175 Earn profit = (175+120+45) -(300) =340-300 =40 ATQ- 40=208 10=52 300=1560 Total number of pencils=300=1560
If no external force acts on a system of bodies, the total linear momentum of the system of bodies remains constant. Which law states this?
A man inside an artificial satellite feels weightlessness because the force of attraction due to earth is –
Which of the following is not an abiotic component of our surrounding?
Which of the following element is found in maximum percentage in the human body?
The force which opposes the relative motion between different layers of liquid or gases is called –
Kindly Study the following questions carefully and choose the right answer.
Human saliva contains an enzyme called salivary amylase that breaks...
In Bernoulli's principle, increase in fluid velocity leads to:
Which part of the plant is responsible for photosynthesis?
A body is thrown vertically upwards and then falls back on the ground. Its potential energy is maximum:
What is the reason for twinkling of stars?