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
Answer:
To be precise, I think it's a pattern question, where you have to add 4 to each number. I'm not very sure though.
<span>The greatest possible error in a given measurement is half of term's
measuring unit; and more complex math stuff the answer is 5 miles.</span>
Step-by-step explanation:
3.5*9.0= 31.5cm²
2*2=4 4/2=2
2*2=4
5*2=10 10/2=5
5+4+2+31.5= 42.5cm²
