(1). With a given rate of simple interest, the ratio of principal and amount for a certain period of time is 4 : 5. After 3 years, with the same rate of interest, the ratio of the principal and amount becomes 5 : 7. The rate of interest is

• (a). 4%
• (b). 6%
• (c). 5%
• (d). 7%
• (e). None of these

(2). A sum of money amounts to Rs. 5,200 in 5 years and to Rs. 5,680 in 7 years at simple interest. The rate of interest per annum is

• (a). 3%
• (b). 4%
• (c). 5%
• (d). 6%
• (e). None of these

(3). A borrows Rs. 800 at the rate of 12% per annum simple interest and B borrows Rs. 910 at the rate of 10% per annum, simple interest. In how many years will their amounts of debt be equal?

• (a). 18
• (b). 20
• (c). 22
• (d). 24
• (e). None of these

(4). A person deposited Rs. 400 for 2 years, Rs. 550 for 4 years and Rs. 1,200 for 6 years. He received the total simple interest of Rs. 1,020. The rate of interest per annum is

• (a). 10%
• (b). 5%
• (c). 15%
• (d). 20%
• (e). None of these

(5). Mr. Thomas invested an amount of Rs. 13,900 divided in two different schemes A and B at the simple interest rate of 14% p.a. and 11% p.a. respectively. If the total amount of simple interest earned in 2 years be Rs. 3508, what was the amount invested in Scheme B?

• (a). Rs. 8,000
• (b). Rs. 6,400
• (c). Rs. 7,000
• (d). Rs. 7,500
• (e). None of these

(6). A sum fetched a total simple interest of Rs. 4016.25 at the rate of 9 p.c.p.a. in 5 years. What is the sum?

• (a). Rs. 7,000
• (b). Rs. 6,400
• (c). Rs. 9,000
• (d). Rs. 8,925
• (e). None of these

• (a). 5%
• (b). 7%
• (c). 10%
• (d). 12%
• (e). None of these

• (a). 1
• (b). 2
• (c). 3
• (d). 4
• (e). None of these

• (a). 1
• (b). 2
• (c). 3
• (d). 4
• (e). None of these

• (a). 1
• (b). 2
• (c). 3
• (d). 4
• (e). None of these