Total of 581 students. if the ratio of girls to boys in the class is 3:4, how many more boys than girls are in the class
1 answer:
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Answer:
see explanation
Step-by-step explanation:
Given that y is directly proportional to x then the equation relating them is
y = kx ← k is the constant of proportionality
To find k use the condition when y = 30, x = 6
k = =
= 5
y = 5x ← equation of proportionality
When x = 12, then
y = 5 × 12 = 60
