Answer:
The value of missing number is:
60
Step-by-step explanation:
The ratio x:y is given below
x:y=1:4
x:y=15:?
x:y=225:900
The ratio x:y will remain same for every x and y
Hence, 1:4=15:?
Let a=?
[tex]\dfrac{1}{4}=\dfrac{15}{a}[/tex]
[tex]a=15\times 4[/tex]
a=60
Hence, the value of missing number is:
60
