Question

Aflati: a) 15% din 250m
b) x=? stiind ca 20% din x=8
c) cat la suta reprezinta 4 din 20

Answer 1

a)$\dfrac{15}{100}*250= \dfrac{15*5}{2}= \dfrac{75}{2}=37,5$
b)20/100*x=8=>x/5=8=>x=40
c)4/100*20=20/25=0,8%