At a preschool, there are 2 teachers for the three-year-olds’ classes and 20 three-year olds. There are 3 teachers for the four-year-olds’ classes and 45 four-year olds. (NO checks for this problem.)
a. Find the ratio of teachers in three-year-olds’ classes to three-year-olds as a fraction reduced to lowest terms.
b. Find the ratio of teachers in four-year-olds’ classes to four-year-olds as a fraction reduced to lowest terms.
c. Find the ratio of three-year-olds to four-year-olds as a fraction reduced to lowest terms.
Then rewrite this ratio in two other ways
2006-10-02 15:15:35 · 8 answers · asked by SCHNITZEL 1 in Science & Mathematics ➔ Mathematics
EVERYONE IS WRONG
ok take it step by step.
1) teachers to 3 year olds
2 to 20
simplify, you get 1/10.
2) teachers to 4 year olds
3 to 45
simplify to 1/15
3) this is a little tricky.
See how when you put the simplified ratios above, you can make a 3 part ratio?
teachers : 3 year olds : 4 year old
1 : 10 : 15
So 3 year old to 4 year olds i 10/15, or 2/3.
Two other ways to write this is 2 to 3 or 2 : 3.
Hope that helped!
It can't be 4/9 like everyone is saying cos they did that wihtout making the teachers the same number! The problem is that ther are 2 teachers for 20 3 year olds and 3 teachers for 45 4 year olds. TRUST MEEE!!
2006-10-02 15:22:46 · answer #1 · answered by teekshi33 4 · 0⤊ 1⤋
a) At a preschool, there are 2 teachers for the three-year-olds’ classes and 20 three-year olds.
2 teacher to 20 students
2:20 (2 to 20)
reduces to 1:10
b) There are 3 teachers for the four-year-olds’ classes and 45 four-year olds.
3:45
reduces to 1:15
c) 20 three year olds, 45 four year olds
20:45
reduces to 4:9
ratio can be rewriten
8:18
12:21
16:36
2006-10-02 22:23:22 · answer #2 · answered by borscht 6 · 0⤊ 1⤋
Given:
a) Two (2) teachers / Twenty (20) three year olds.
b) Three (3) teachers / Forty five (45) four year olds.
Answers:
a) 2 / 20 or 1/10.
b) 3 / 45 or 1/15
c) 20 / 45 or 4/9. Two other ways: 4:9 and also 44%
Regards,
Mysstere
2006-10-02 22:23:18 · answer #3 · answered by mysstere 5 · 0⤊ 1⤋
a) 2 teachers for 20 students= 2/20=1/10.
b)) 3 teachers for 45 students=3/45=1/15.
c) 20 3yr olds to 45 4 yr olds=20/45=4/9.
4:9
9/4 4 yr olds/3 yr olds
2006-10-02 22:23:57 · answer #4 · answered by yupchagee 7 · 0⤊ 1⤋
a)1:10
b)1:15
c)4:9
a)1/10 b)1/15 c)4/9
a)0.1 b)0.06666666... c)0.4444444.....
2006-10-02 22:37:02 · answer #5 · answered by Croasis 3 · 0⤊ 0⤋
Sorry...that sounds like a headache to me!
2006-10-02 22:19:03 · answer #6 · answered by my two cents 6 · 0⤊ 1⤋
1-10 1-15 4/9 4/8 ????? (HEADACHE!)
2006-10-02 22:25:01 · answer #7 · answered by ♫♥chocol8roxღ♫ 1 · 0⤊ 1⤋
1/10
1/15
4/9
4:9
??
2006-10-02 22:20:28 · answer #8 · answered by blood 2 · 0⤊ 1⤋