Out of 80 students in a class 30% are boys, find
the numbers of girls. Plz help me​

Step-by-step explanation:

Total no. of students in the class is 80

no. of girls=30

% of the girls in the class=30/80×100

= 30/8×10

= 300/8

= 37.5%

hope this helps...!

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.