Learn Class 8 Math - Comparing Quantities

Ratio

It is related to comparing two different quantities.

Percentage

It has a unique symbol of % and represents every hundred.

Finding Discounts

Commonly, there's a purchase, and therefore, the product is at a reduced price.

Essentially discount is the reduction within the market value to extend the sale and market the products.

Discount % = Discount/Market Price * 100

Gains and losses resulting from buying and selling

When we buy or sell something within the market, there are such a big amount of things enclosed in it, like the price of the product, some overhead expenses to gift it, some promotion, etcetera.

Terms Related to Buying and Selling:

• Cost Price (CP): Cost worth is the actual amount paid by the manufacturer to provide it or produce the service.
• Selling Price (SP): The quantity at which the merchandise is sold within the market by the retailer.
• Profit: Once commerce a product, if the vendor has some monetary gains, it is aforementioned a profit.
• Profit = SP-CP
• Loss: The negative financial revenue that a seller needs to bear while selling the product.
• Loss = CP-SP

Compound Interest

Interest is the more money paid by the banks on our money at a set interest rate.

Compound Interest(CI) = Amount(A) – Principal(P)

Simple Interest

Simple Interest = Principal(P)* Time(T)* Rate(R)/ 100

Learning Videos for 8th Grade Math - Comparing Quantities