558 is 124% of than the number you need, so call that number x, so

558 = 124% of x, so

558/124 = 1% of x, so

100 x 558/124 = 100% of x, so

450 = x.

So 450 students had a driver`s licence last year.

Hope this helps, Twiggy.

therefore 450 students had a licence last year, add 24% (558/124*24) which is 108 and now 558 students have a licence.

DL this year = 558

Let DL last year = X

If DL last year = X

then DL this year = X+ 24%

and X + 24% = 558

also X =100%

so 124% = 558

558 divided by 124 = 1%

multiply this by 100 equals 100%

or 450

450 students had a Driver’s Licence last year.

Let x be the number of ppl who had a license last year. This year (x + 24% of x) ppl have license or 558 people.

x is the same thing as 1*x. 24% of x is the same thing as .24*x. So 1*x + .24*x = 1.24 *x

1.24*x = 558

Divide… x = 558/1.24 = 450 people