Question

if x:y =5:7 and x=30 then y=?​

Answer 1

Answer:

42

Step-by-step explanation:

x/y=5/7

30/y=5/7

y=42

Answer 2

Answer:

3:2

Step-by-step explanation:

15 \div 100 \times x  

= 15x \div 100 \\  =

 \: x = 100 \times 15 \\ x = 1500 \\ 20 \div 100 \times x \\  = x = 20 \times 100 \\ x = 2000 \\  

x/y= 1500/2000

x:y= 15:20

=>>>  X:Y = 3:2