Question

In a class of 30 students, 70% have brown eyes. One-third of the remaining students have green eyes. How many students in the class have green eyes?

a.6
b.3
c.4
d.9

Answer 1

Answer:

The answer of your question is B

Step-by-step explanation:

$30 \: st \: is \: 100\% \\ x \: st \: is \: 70\% \\ x = (30 \times 70) \div 100 = 21 \: st \: have \: brown \: eyes \\ 30 - 21 = 9 \: remaining \\ 9 \times \frac{1}{3} = 3 \: st \: have \: green \: eyes$