Question

in how many years does the sum of of 1200 become 1800 at the rate of simple interest of 5% per annum?
a)10
b)15
c)20
d)25​

Answer 1

Answer:

10 years

Step-by-step explanation

Answer 2

Answer:

Step-by-step explanation:

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

Simple interest  = p x n x r /100

600 = 1200 x n x 5/100

n = 10

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