At a school event there were 96 girls .the ratio of number of girls to the number of boys was 4: 5
after some time some boys arrived and the ratio became2: 3 .how many boys arrived?

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

child does not get an education so she can use the molla on junk