Question

Dupa doua scumpiri succesive , una de 10\100 si a doua de 20\100 , un obiect costa 2376 lei.Aflati pretul initial.

Answer 1

6/5x11/10x a =2376
66/50 a=2376 (inmultim 50 )
66a=118800 (impartim 66)
a=1800 lei
Coroana te rog :*

Answer 2

$a+ \frac{10*a}{100} + \frac{20}{100} * (a+ \frac{10*a}{100} )= a+ \frac{a}{10} + \frac{2}{10} * \frac{11a}{10} = a+ \frac{a}{10} + \frac{22a}{100}$
$a+ \frac{a}{10} + \frac{22a}{100} = 2376 =\ \textgreater \ 100a+10a+22a= 2376 =\ \textgreater \ 132a=237600$
a= 1800  lei (pret initial)