Question

15. 65:x = 13:6. Find the value of x.

(Section C)

16. Ravindra deposits rupees 2,000 in a bank at the rate of

10% per annum . Find the interest after 3 years.(3marks)

17.Calculate the principal that will create rupees 600 as simple

interest over three years at the rate of 20% per annum.

(3marks)

18. John sold a jack fruit and made profit of Rs. 32.if the cost

price of the Jackfruit was Rs. 320 then find the profit

percentage.

(3marks)

19. The formula of :- (1 mark)

a) Simple interest --------------.​

Answer 1

Answer:

15:. x=30

16:. 600rs

17:. 1000

Answer 2

Step-by-step explanation:

15)

65:x = 13:6

65/x=13/6

x = 65×6/13

= 30

x=30

16) P=2000

R=10%

T= 3 years

SI = P×R×T/100

= 2000×10×3/100

= 600

17) SI=600

P=?

R=20%

T=3 years

SI= P×R×T/100

P = T×R/100×SI

= 20×3/100×600

= 1000

18) profit = 32

cost price = 320

profit% or P% = profit/CP×100

= 32/320×100

= 10%

19) a) SI=P×R×T/100