Question

11. Arun bought a car for 53,50,000. The next year, the price went
upto 3,70,000. What was the percentage of price increase?

12. Convert each part of the ratio to percentage: (a) 3:1 (b)2:3:5

13. Find the area of a rectangular plot, one side of which is 48 m and its diagonal is 50 m.

14. Find the height of the cylinder whose volume is 1.54 m3 and
diameter of the base is 140 cm?

15. A milk tank is in the form of cylinder whose radius is 1.5 m and
length is 7 m. Find the quantity of milk in litres that can be stored in
the tank?​

Answer 1

Answer:

Step-bSolution:

Increased the price of a car from Rs. 3,50,000 to Rs. 3,70,000.

Amount change = 3,70,000 - 3,50,00 = Rs. 20,000

Therefore, Increased percentage = \frac{Amount\ of\ change}{Original\ amount}\times100  

Original amount

Amount of change

​  

×100

= \frac{20000}{350000}\times100=5\ \frac{5}{7}\%  

350000

20000

​  

×100=5  

7

5

​  

%

Hence, the percentage of price increased is 5\ \frac{5}{7}\%5  

7

5

​  

%y-step explanation: