Ms. Johnson has 50 students in Period 5. In period 5, 40% of these students are girls. How many students are boys in her Period 5 class? (serious answers only)

30.

Step-by-step explanation:

40% of 50 is 20. 50-20=30

30

Step-by-step explanation:

Take her students (50) and multiply it by .4, which is just 40%, then you should get the amount of boys in her classroom.

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.