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Mathematics 14 Online
OpenStudy (anonymous):

42 is 35%of what?

Parth (parthkohli):

Let's say that 42 is 35% of x. \( \color{Black}{\Rightarrow 42 = 35\% \times x}\) \( \color{Black}{\Rightarrow 42 = \Large{35x \over 100} }\) Solve

OpenStudy (anonymous):

do i start with 42*35?

Parth (parthkohli):

You should isolate the variable. Can you tell me what you have to do?

OpenStudy (anonymous):

no not yet? i know how to solve when the percent of a certain is first but I dont know how when its a certain number of a percent?

Parth (parthkohli):

You just have to do the opposite operation.

Parth (parthkohli):

If it is 3 multiplied by x, then you have to divide by the same number i.e 3.

Parth (parthkohli):

Inverse operation, as it is said.

Parth (parthkohli):

If here, it is divided by 100, then you'll have to multiply both sides by 100. Get it?

OpenStudy (ajprincess):

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