The price of mobile phone decreased by 30%. its new price is $350.Find the original price

455

Step-by-step explanation:

30%-100= -30*100= -3000/30%= -100

30%of 350 is 455

That's 30 percent off! For $30, you should have $21

original price is $500

Explanation:

decreased price percentage: 100% - 30% = 70%

70% → $350

1% → $(350/70)

1% → $5

∵ original price will be always 100%

100% → $5 * 100

original price is $500

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.