Well 75x12=900 so 900 divided by 40 is 22.5 so 22 teachers can have 40 chalks but the principal needs to order another 20 :)
Answer:
See below
Step-by-step explanation:
a) 7/10
b) 7/10 x 3/9 = 21/90 = 7/30
c) Also 7/30
Since everyone is getting a quarter of a pizza, 27 divided by 4 is 6.75. 6.75 rounded to a whole number is 7.
The answer for this question is 138
how would I know you can find your in if you read