PLEASE ANSWER THESE 2 QUESTIONS. THANKYOU BARTLEBY. 7. A price tag of P 1,200.00 is payable in 60 days but if paid within 30 days it will have 3% discount. Find the rate of interest. 8. An investment...

PLEASE ANSWER THESE 2 QUESTIONS. THANKYOU BARTLEBY.

7. A price tag of P 1,200.00 is payable in 60 days but if paid within 30 days it will have 3% discount. Find the rate of interest.

8. An investment was made two years and three months ago at 7% simple interest. The investor has just received the principal amount of the investment along with the P 30,000.00 interest. What is the principal amount of the investment?