At the school fair,70% of the people are under 16 years old. one third of the people remaining are teachers. if there are 21 teachers at the fair, how many people are there at the fair total ?

There are

210

people at the fair.

Step-by-step explanation:

13×3x10=11×3x10=x number of teachers at fair are 21. Hencex10=21 or

x110×110=21×10=210

or

x=210

Hence, there are 210people at the fair.

60: 45 =12: 9 =4: 3 so the answer is 4: 3