Percent Increase or Decrease with Equations

Front

What is the equation to find the time it takes Andre if it takes Jada x minutes and Andre takes \frac{3}{4} more time?

Back

y = 1.75x

Front

How do you calculate the percent increase from x to y?

Back

Use the equation y = 1.25x for a 25% increase.

Front

If the price of oranges decreased by 20% from $1.75, what is the new price?

Back

$1.40

Front

What was the population of bison last year if there is a 10% decrease and there are 540 bison this year?

Back

600 bison

Front

How much will a $150 savings bond be worth after earning 105% interest?

Back

$157.50

Front

What does a 20% decrease mean in terms of price?

Back

It means the new price is 80% of the original price.

Front

If a quantity increases by 50%, what is the equation to find the new value?

Back

y = 1.5x

Front

What is the formula for calculating percent decrease?

Back

Percent Decrease = \frac{(Original - New)}{Original} \times 100%.

Front

If a product costs $80 and is marked down by 25%, what is the sale price?

Back

$60

Front

What is the relationship between percent increase and the multiplier used in equations?

Back

A percent increase of p% corresponds to a multiplier of (1 + \frac{p}{100}).