Answer:
4:3
Step-by-step explanation:
a+b = 7 units
a = 4 units
b = 7 - 4 units
Thus,
a:b
-----
4:3
Answer:
The probability of choosing a word randomly which is one of the words Joey learned = 1/4
Step-by-step explanation:
Total number of words to be memorized = 40 words
The number of words memorized by Joey = 10
Let E: Event of randomly choosing a word that Joey has learned.
P(E) = 
Hence, the probability of choosing a word randomly which is one of the words Joey learned = 1/4
Answer:
number of girls = 90
Number of boys = 125
Number of adults = 20
Step-by-step explanation:
Total people at the summer camp= 235
Let
number of girls=x
Number of boys = x + 35
Number of adults = x - 70
Total people at the summer camp= number of girls + Number of boys + Number of adults
235 = x + (x+35) + (x - 70)
235 = x + x + 35 + x - 70
235 = 3x - 35
Add 35 to both sides
235 + 35 = 3x
270 = 3x
Divide both sides by 3
x= 270/3
= 90
x = 90
number of girls= x = 90
Number of boys = x + 35
= 90 + 35
= 125
Number of adults = x - 70
= 90 - 70
= 20
Total = 90 + 125 + 20
= 235
