X = y+4/3
I mean, I hope this helped.
Answer: 2 2/3 or 2.6 repeating
Step-by-step explanation:
- Reduce the numbers With the greatest common divisor 2
- Calculate product
- Calculate the difference
- YOUR FINAL ANSWER
Hope I was able to satisfy your needs
Answer:Mark Is 9 years old; Christine is 5 years old
Step-by-step explanation:
Present age
LET mark age be x
Christine be x-4 yrs
In 3 yrs Time
Mark will be x+3 yrs old
Christine will be (x -4 +3) = x-1 years old
Also, In 3 years time
Christine = 2/3 Mark
such that
x-1 = 2/3(x+3)
x -1= 2x+6 / 3
3x -3= 2x+6
3X--2X = 6+3
=X=9
Mark Is 9 years old
Christine is x -4 = 9-4=5 years old
27+3x-31=20
-4+3x=20
+4 +4
3x=24
X=8
Id there are 21 girls according to my calculations there would be a heap amount of boys which is 23
