The ratio of the number of boys to the number of girls at a school is 4: 5. if there are 120 boys, how many students are there altogether?

a.) 53
b.) 96
c.) 150
d.) 270

270 students

Step-by-step explanation:

There are more boys than girls, as the ratio of boys to girls is 4:5.

Write and solve an equation of ratios:

   4           5

=

 120          g

... where g is the number of girls.  Cross multiplying, we get:

4g = 600, so that g must be 150.

120 boys plus 150 girls comes to 270 students (Answer d)

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

answer: -1

step-by-step explanation: