Mathematics: Aquantity decreases from 35 to 30 % decrease a quantity increases from 30 to 35 % increase the price of a latte dropped from $3.12 to $3 % decrease the cost of gasoline rose from $3 to $3.12 % increase.

Aquantity decreases from 35 to 30 % decrease a

shanaz8199

15.01.2022

A quantity decreases from 35 to 30 % decrease

$\% decrease= \frac{|30-35|}{35}*100 =14.29\%$

A quantity increases from 30 to 35 % increase

$\% increase= \frac{|35-30|}{30}*100 =16.67\%$

The price of a Latte dropped from $3.12 to $3 % decrease

$\% decrease= \frac{|3-3.12|}{3.12}*100 =3.85\%$

The cost of Gasoline rose from $3 to $3.12 % increase

$\% increase= \frac{|3.12-3|}{3}*100 =4\%$

Step-by-step explanation:

For this case we can use the following formula in order to calculate the % of increase or decrease:

$\% = \frac{|Final -Initial|}{Initial}*100$

Where Final represent the final value and Initial the initial value.

A quantity decreases from 35 to 30 % decrease

$\% decrease= \frac{|30-35|}{35}*100 =14.29\%$

A quantity increases from 30 to 35 % increase

$\% increase= \frac{|35-30|}{30}*100 =16.67\%$

The price of a Latte dropped from $3.12 to $3 % decrease

$\% decrease= \frac{|3-3.12|}{3.12}*100 =3.85\%$

The cost of Gasoline rose from $3 to $3.12 % increase

$\% increase= \frac{|3.12-3|}{3}*100 =4\%$

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mazz1041

10.02.2022

The answer is A.

23-22=1

1÷23=0.0434782609

Convert : 0.0434782609 to a percent

which would be 4.34% which would be

rounded to 4.3%.

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