percentage questions and answers
TRANSCRIPT
Percentage Questions and
Answers
1) 3/8 percent of the value of the car is 3500 rupees, then what is the price of the car?
Explanation :
Let us assume the value of the car is C.
So, 3/8 % of C = 3500
⇒ (3C/800) = 3500
3C = 2800000
⇒ C = 933333 RS.
Price of the car is 933333 RS.
2) A is 10% more than 1250. B is 10% les than A. then, Find the value of B?
Explanation :
According to question
⇒ A = 1250 + 10% of 1250
⇒ 125 + 125
⇒ A = 250
B = 250 - 10% of 250
⇒ 250 – 25
So B = 225.
3) A sales boy 6% commission on mobile sales, if he get 1200 as commission, then find worth of mobile sales?
Explanation :
Let the mobile sale worth is X.
Then 6% of X = 1200
⇒ [6/100] X = 1200
⇒ X = [1200 × 100] / 6
⇒ 20000
So, sales boy saled 20000 rs worth of mobile.
4) A school has increased its students number from 1000 to 2250 in 10years. What will be the increase percentage per year?
Explanation :
According to the question,
Increase of students in 10years = 2250 - 1000 = 1250.
⇒ Increase percentage = [ ( 1250/1000 ) × 100 ] % = 125%
⇒ Increase of percentage per year = (125/10)
% = 12.5%
5) Find ananya,s monthly salary when she spend 40% on food,20% on kirana,10% on school fees,10% on movies and saves 3500 per month?
Explanation :
Letus assume Ananya's monthly salary be 'A‘
Monthly savings = [ 100% - (40% + 20% + 10% + 10%) ] = 20%
According to the question,
⇒ 20% of A = 3500
⇒ 20A/100 = 3500
⇒ 20A = 350000
⇒ A = 17500
So Ananya's monthly salary is 17500rs
6) If 10 rs is the cost of notebook but 15% discount is there on every book after 10 books purchased. What is the cost of 50 notebooks?
Explanation :
According to the question 10 books cost is 10× 10 = 100rs
• 100rs ⇒ equ1
• For remaining [ ( 100 - 15 ) % of 10 × 40
ie (85/100) × 400 ⇒ 320rs
So, total cost of 50books is 100 + 320 = 420rs.