Solution:-

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◍ Here, the question has given US the principal, RATE of interest and time that is Rs. 1,800, 5% per annum and for 1 years respectively. Now, the question has asked us to find the SIMPLE interest of it. So to get the answer we simply have to apply the formula of SI and we will easily get our answer.

ANSWER:-

◈ The simple interest on Rs. 1,800 for 1 years at 5% per annum will be Rs. 90.

GIVEN:-

☆ Principal = Rs. 1,800

☆ Rate of Interest = 5% per annum

☆ Time = 1 years

TO FIND:-

↠Simple Interest= ?

FORMULA:-

➾ Simple Interest = P × R × T / 100

SOLVING BY APPLYING THE FORMULA:-

☆ Principal = Rs. 1,800

☆ Rate of Interest = 5% per annum

☆ Time = 1 years

➾ Simple Interest = P × R × T / 100

• Finding the SI:-

➢ SI = 1,800 × 5 × 1 / 100

➢ SI = 1,800 × 5 / 100

➢ Cancelling the zeros.

➢ SI = 18 × 5 / 1

➢ SI = 18 × 5

➢ SI = 18 × 5 = 90

➢ SI = Rs. 90

Hence, we got the answer. The simple interest is of Rs. 90.

1. Profit = (SP > CP) = SP - CP
2. Loss = (CP > SP) = CP - SP
3. Profit% = (Profit × 100 / CP)%
4. Loss% = (Loss × 100 / CP)%
5. SP when Profit Percent is given = (100 + Profit % / 100)× CP
6. CP when Profit Percent is given = (SP × 100 / 100 + Profit %)
7. SP when Loss Percent is given = (100 - Loss / 100)× CP
8. CP when Loss Percent is given = (SP × 100 / 100 - Loss)

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