Question

若x:y=5:3,且x与y的和是10,则x等于多少,y等于多少

Answer 1

x:y=5:3,x+y=10

x=5y/3,x+y=10

5y/3+y=10

8y=30

y=30/8=15/4

x+15/4=10

x=25/4