A = final amount

P = initial principal balance

r = annual interest rate

t = time (in years)

There is a 10% discount

The item now costs $270

Discount means that a percentage of the cost of an item is removed from the cost of the item

https://youtu.be/5qxX222sLtE?si=eW9U_XDC4rqLMJ8H

A = P+I

A = final amount

P = initial principal balance

r = annual interest rate

I = interest amount

t= time (in year)

Simple interest is an interest charge that borrowers pay lenders for a loan. It is calculated using the principal only and does not include compounding interest.

Down Payment:
A down payment is an initial payment made at the beginning of a purchase, typically a percentage of the total amount, to secure the transaction and reduce the amount financed.

Example:

Let's say you want to buy a car priced at SGD 50,000 in Singapore.

• Down Payment: You pay 20% of the car's price, which is SGD 10,000, as a down payment.

• Installment: You agree to pay the remaining SGD 40,000 through monthly installments of SGD 1,000 over 40 months.

In this example, the down payment reduces the amount you need to finance, and the installments allow you to pay off the remaining balance over time.

E.g: 10% discount of $100 is $10. Thus, if there is a 10% discount, we will save $10

X = (value ÷ y%) x 100

The cost of a TV inclusive of GST is $2160. GST is 8%

Original cost of TV = ($2160 ÷ 108%) x 100

= $2000

The original cost of a TV is $2000

a sum a buyer pays upfront when purchasing a home or car and is a percentage of the total purchase price. The higher the down payment, the less the buyer will need to borrow to complete the transaction, the lower their monthly payments, and the less they'll pay in interest over the long term.

Installment

one of the parts into which a debt is divided when payment is made at intervals. one of several parts (as of a publication) presented at intervals.