Question

Ma gandesc la un numar.Il micsorez cu 10% si obtin 360.Numarul la care m-am gandit este:

Answer 1

a - numarul
a - 10*a/100 = 360
a - a/10 = 360
9a/10 = 360
=> a = 360*10/9 => a = 400

Answer 2

90/100 ·y=360
⇒y=360/90/100
⇒y=360·100/90
⇒y=4·100
⇒y=400;