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Grade 8 - Mathematics
9.27 Simple Interest - III

Example:
P = $27,600, I = $2484 and R = 3%, then find the time.

Solution:
Formula
I = PTR/100
Where I = Interest, P = Principal, T = Time and R = Rate or interest.

Therefore:
T = (I*100)/(PR)

Substituting the given values in the above formula.
T = (2484 * 100) / (27600 * 3)
T = 248400 / 82800
T = 3 years.


Directions: Solve the following problems. Also write at least ten examples of your own.
Q 1: P = $51,600, I = $7,740 and R = 5% then find Time.
2 1/2years
3years
2years
3 1/2years

Q 2: P = $76,800, I = $6,912 and R = 3% then find Time.
2years
2 1/2years
3years
3 1/2years

Q 3: P = $12,700, I = $571.5 and R = 3% then find Time.
2years
1years
2 1/2years
1 1/2years

Q 4: P = $77,600, I = $7,760 and R = 5% then find Time.
2 1/2years
1 1/2years
2years
1years

Q 5: P = $2,600, I = $390 and R = 5% then find Time.
4years
3years
5years
2years

Q 6: P = $57,600, I = $1,152 and R = 2% then find Time.
1years
2years
2 1/2years
1 1/2years

Q 7: P = $21,900, I = $3,285 and R = 3% then find Time.
6years
5years
3years
4years

Q 8: P = $27,600, I = $1,104 and R = 2% then find Time.
3 1/2years
3years
2years
2 1/2years

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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