(X/2)*150 + (X/2)*75 = 300*500

问题描述:

(X/2)*150 + (X/2)*75 = 300*500

(X/2)*150 + (X/2)*75 = 300*500
3(X/2)*75 = 150*2*500=75*4*500
3(X/2)=4*500
3X=8*500
X=4000/3