Question

daca 18% dintr-un numar rational "a"este 900 , atunci "a"=... Help plss

Answer 1

18/100×a=900

9/50×a=900

9a/50=900

9a=900×50

9a=45000

a=45000:9

a=5000

Answer 2

"18% dintr-un numar rational "a" " se scrie asa 18% · a sau 18:100·a

$\bf 18:100\cdot a = 900$

$\bf 0,18a = 900\:\:\:|:0,18$

$\boxed{\bf a = 5000}$