Question

540/x-540/(1.5x)=15谁会解?(x/60)-5=(x/80)+5谁会解

Answer 1

540/x-540/(1.5x)=15

(540/x)*(1-1/1.5)=15

(540/x)*(1/3)=15

540/x=45

x=540/45=12

(x/60)-5=(x/80)+5

(x/60)-(x/80)=10

4x-3x=10*240

x=2400