Question

Exercise 7.4
1. Amit earns 45000 and Sneha earns 25000. Find the per cent of:
(a) Amit's salary over Sneha's salary.
(b) Sneha's salary over Amit's salary.
2. A car company manufactured 2000 cars of a model in 1999. The number of cars manufactured by
the company in 2000 was 3500. What is the per cent increase in the number of cars manufactured
in 2000?
3. Ritika scored 320 marks in an examination. The minimum pass marks were 300. By what per cent
are her marks over the minimum pass marks?
4. The speed of a car on a highway is 80 km/hr. On entering the city, the speed of the car slowed
down to 50 km/hr. Calculate the per cent decrease in the speed of the car.
5. If Lipi's salary is 120% of the salary of Rajeev, calculate the salary of Rajeev as a per cent of Lipi's
salary.
6. Weight of Sohail was 60 kg. He dieted for a month and lost 20% weight. Calculate his weight after
one month
7. Aditya has 48 bananas while Kritika has 32 bananas. What is the per cent of :
(a) number of bananas that Aditya has more over the number of bananas Kritika has?
(b) number of bananas that Kritika has less over the number of bananas Aditya has?
8. Raju loves reading books. He has a collection of 80 books with him. He wants to increase his
collection to 110 books. Find the per cent increase in the number of books he desires.
9. Mary had 1500 in her purse. Due to a tear in her purse, some money fell out from the purse.
The amount left in her purse is 1100. What per cent of her money fell out from the purse ?
10. Surabhi earns a salary of * 12000 every month. Aayushi earns 3000 more than Surabhi.
Calculate :
(a) Per cent of extra money earned by Aayushi over Surabhi's salary.
(b) Per cent of money earned less by Surabhi over Surabhi's salary.​

Answer 1

Answer:

1 a) 45000/25000×100=190%

b) 25000/45000×100=55•55%

2) 75%

3500-2000/2000×100=75%

Answer 2

Step-by-step explanation:

Amit earns 45000rsand Sneha 25000rs find the p