SOLVING PERCENT PROBLEMS | GRADE 6

The video introduces the topic of solving percent problems, covering concepts like percent of change, discount, markup, commission, sales tax, and interest.

The first example demonstrates calculating the percent of increase when a notebook's price rises from 9 to 12 pesos. The formula (New Amount - Original Amount) / Original Amount is introduced, leading to a 20% increase.

The second example illustrates calculating the percent of decrease when a pen's price falls from 10 to 6 pesos. The formula (Original Amount - New Amount) / Original Amount is used, resulting in a 40% decrease.

This section explains how to find the discount amount. For a dress costing 450 pesos with a 20% discount, the discount is calculated by multiplying the original price by the discount rate (converted to decimal), which is 90 pesos.

The video then shows how to find the discount rate. If a watch originally costs 500 pesos and has a 50-peso discount, the rate is calculated by dividing the discount by the original price, resulting in a 10% discount rate.

The concept of markup is introduced, and an example is provided: calculating the markup for a blouse costing 70 pesos with a 15% markup. The markup amount is found to be 10.50 pesos.

This part explains commission. An agent receives a 3% commission on property sales. If they sold a property for 50,000 pesos, their commission is 1,500 pesos.

The final example demonstrates calculating simple interest. If 5,500 pesos is invested at 1% interest per year, the money will earn 55 pesos in one year. The formula used is Principal x Rate x Time.

The video concludes with a brief recap of the various percent problems and their solutions covered throughout the lesson.