Question

[Lê Nguyễn Quỳnh Như]

Tìm a,b,c,d biết 1/2a=2/3b=3/4c và a-b=15

Answer 1

[Nguyemminhanh]

\(\frac{a}{2}\)=\(\frac{b}{\frac{3}{2}}\)=\(\frac{c}{\frac{4}{3}}\)=\(\frac{a-b}{2-\frac{3}{2}}\)=\(\frac{15}{\frac{1}{2}}\)=30

a=30.2=60

b=30.\(\frac{3}{2}\)=45

c=30.\(\frac{4}{3}\)=40