Arithmetic

Simple & Compound Interest

Medium

Arrange the simple interest of the following cases in decreasing order-

(A) The simple interest on Rs 6600 at 5% per annum for 2 yrs.

(B) The simple interest on Rs 200 at 6% per annum for 5 yrs.

(C) The simple interest on Rs 840 at 5% per annum for 4 yrs.

(D) The simple interest on Rs 5000 at 12% per annum for 2 yrs.

Choose the correct answer from the options given below:

(A), (B), (C), (D)

(B), (A), (D), (C)

(B), (A), (C), (D)

(D), (A), (C), (B)

✅ Correct Option: 4

Simple Interest is calculated using:

$SI = \dfrac{P \times R \times T}{100}$

where $P$ = Principal, $R$ = Rate of interest per year (%), $T$ = Time (years)

For case (A): $P = 6600$ , $R = 5$ , $T = 2$

$SI = \dfrac{6600 \times 5 \times 2}{100}$

$SI = \dfrac{66000}{100}$

$SI = 660$

For case (B): $P = 200$ , $R = 6$ , $T = 5$

$SI = \dfrac{200 \times 6 \times 5}{100}$

$SI = \dfrac{6000}{100}$

$SI = 60$

For case (C): $P = 840$ , $R = 5$ , $T = 4$

$SI = \dfrac{840 \times 5 \times 4}{100}$

$SI = \dfrac{16800}{100}$

$SI = 168$

For case (D): $P = 5000$ , $R = 12$ , $T = 2$

$SI = \dfrac{5000 \times 12 \times 2}{100}$

$SI = \dfrac{120000}{100}$

$SI = 1200$

Comparing the simple interests:

(D) = Rs 1200

(A) = Rs 660

(B) = Rs 60

Therefore, the decreasing order is: (D), (A), (C), (B)

2025: 3 June Shift 2

Consider the simple interest of the following

(A) The simple interest on Rs 8,930 at 6% per annum for 5 years

(B) The simple interest on Rs 3,080 at 13.50% per annum for 4 years

(D) The simple interest on Rs. 3,120 at 4.00 % per annum for 5 years

The simple interests of these in increasing order are:

Choose the correct answer from the options given below:

2022: 20 Aug Shift 1

The simple interest of an amount is $\frac{16}{25}$ of the principal. Find the rate % PA, if the time and rate both are numerically equal.

2023: 19 June Shift 1

A woman wants to give Rs 32,800 to her two grandchildren aged 17 years and 18 years. The amount is to be divided such that each grandchild receives equal amounts when they turn 20 years old, at 5% p.a. compound interest. Find the present share of the younger grandchild.

2025: 15 May Shift 1

The simple interest on Rs 7200 at 14% per annum for 7 years is:

2023: 24 May Shift 3

For a certain period, simple interest on Rs. 1000 at 10% per annum is Rs. 100 more than that on Rs. 800. Find the period (in years).

2024

A certain sum becomes ₹ 2,356 in 3 years and ₹ 2,660 in 5 years on simple interest. The value of sum is:

Solution

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