Question

at what rate percent per annum simple interest will a sum be three times itself in 10 year

Answer 1

Answer:

20% This Is Your Answer

Step-by-step explanation:

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Answer 2

Answer

⇝ Rate = 20%

Given

At what rate percent per annum simple interest will a sum be three times itself in 10 year

To find

• Rate %

Solution

Let the principal be x and the amount be 3x.

Formula to be used :-

❖ Simple Interest = Amount - Principal

Substituting the given values,

⟼ 3x - x

⟼ 2x

★ Simple Interest = 2x

• Formula to be used :-

❖ S.I. = (P × R × T)/100

where,

• P = Principal
• R = rate %
• T = Time

Substituting the given values,

⟼ 2x = (x × R × 10)/100

⟼ 2x = (x × R)/10

⟼ (2x × 10)/x = R

⟼ 2 × 10 = R

⟼ 20% = R

∴ Rate = 20%