Question

ayuda por favor es urgente

Answer 1

0,78 $0,78 = \frac{78}{100}= \frac{39}{50}$


$\frac{a}{2} = \frac{b}{3} = \frac{c}{5}$

a=2k = 2(40)=80
b=3k = 3(40)=120
c=5k = 5(40)= 200

a+b+c =420
2k+3k+5k =420
10k=420
k=420/10
k=42