Question

In how many years does the sum of 1200 become 1800 at the rate of simple interest of 5% per amnum?
B)20
D) 25
A) 100
С) 15​

Answer 1

Answer:

Solution:

Given,

Principal = Rs 1200

Total amount = Rs 1800

Rate of interest = 5 % per annum

Number of years = ?

STEP 1:

FIND THE SIMPLE INTEREST

Total amount = principal + simple interest

1800 = 1200 + simple interest

simple interest = 1800 - 1200

simple interest = 600

STEP 2:

FIND THE NUMBER OF YEARS

Thus it takes 10 years for sum of ₹ 1200 become ₹ 1800 at the rate of simple interest of 5% per annum

Answer 2

$\Large{\textsf{\textbf{\underline{\underline{ 10 years . \::}}}}}$

Step-by-step explanation:

Step-by-step explanation:Given that:

• Sum = Rs 1200
• Amount = Rs 1800
• Rate of interest = 5% per annum

To Find:

• Time

Formula used:

• SI = A - P
• SI = (P × R × T)/100

Where,

• SI = Simple interest
• A = Amount
• P = Sum/Principal
• R = Rate of interest
• T = Time

First we have to find simple interest:

⇒ SI = A - P

⇒ SI = Rs 1800 - Rs 1200

⇒ SI = Rs 600

∴ Simple interest = Rs 600

Now finding the time:

⇒ SI = (P × R × T)/100

⇒ 600 = (1200 × 5 × T)/100

⇒ 600 = 6000T/100

⇒ 600 = 60T

⇒ T = 600/60

⇒ T = 10

$\small{\textsf{\textbf{\underline{\underline{∴ Time = 10 years\::}}}}}$