Answer:
15400
Step-by-step explanation:
Answer:
2 Dollars
Step-by-step explanation:
First check how much it would cost for 3 teachers to buy the present like this:
24÷3
3_/24
08
1 teacher pays 8 dollars
now If Do this Over with 4 teachers
24÷4
4_/24
06
1 teachers pays 6 dollars
now the difference is 8-6 = 2 dollars
21 chaperones are needed for 420 students.
Step-by-step explanation:
No. of juniors = 148
No. of seniors = 272
Total = 148+272 = 420 students
3 chaperones = 60 students
1 chaperone = 
Ratio of chaperon to students = 1:20
Let,
x be the number of chaperons for 420 students.
Ration of chaperones to students = x:420
Using proportion
Ratio of chaperones to students :: Ratio of chaperons to students

Product of mean = Product of extreme

Dividing both sides by 20

21 chaperones are needed for 420 students.
Keywords: ratio, proportion
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