Question

John has rs 4000 he wants to invest it in two types of bond. the first bond pays him 7% and second pays an interest of rs 9 %per annum. He uses the first bond for 12 years and other for 6 years such that interest on first type is double to that of other. Find the amount in each type of bond

Answer 1

In first bond rs 7360 and in second rs 6160 hope this answer will help you

Answer 2

Answer:

x = Rs 2250

y = Rs 1750

Step-by-step explanation:

P = Rs 4000 = x + y

Case 1,

rate = 7%

t = 12 year

SI= x * r * t/100

Case 2,

rate = 9%

t = 6 year

SI= y * r * t/100

According to question,

x * r * t/100 = 2 * y * r * t/100

x * 7 * 12 = 2 * y * 9 * 6

x * 7 = 9 y

x/y = 9/7

Let x be 9 t and y be 7 t

Now x + y = 9 t + 7 t = 16 t

16 t = 4000

t = 4000/16

= 1000/4 = 250

x = 9 * 250 = Rs 2250

y = 7 * 250 = Rs 1750