Answer:
Son's age is 25.
Step-by-step explanation:
Let the Father's age be 2x.
Let the son's age be x.
Five years ago:
Man's age will be = 2x - 5
Son's age will be = x - 5
If the ratio of their ages five years ago was 9:4, then:
2x - 5/x-5 = 9/4
⇒ 4(2x - 5) = 9(x - 5)
⇒ 8x - 20 = 9x - 45
⇒ -20 + 45 = 9x - 8x
⇒ 25 = x
∴ x = 25
Hence, the son's age = 25 years
If x = 25, the father's age (2x) will be 2 × 25 = 50 years
Answer:
The equation of the line is y = 2.
Step-by-step explanation:
When a line is horizontal, it's gradient will be 0. So you have to substitute the coordinates into the equation, y = mx + b, to find the b :
B. 9 packs for $3 is best to me
Answer:
$916.67
Step-by-step explanation:
The remaining amount is 2/3 of the total. 3/4 of that is ...
(2/3)(3/4) = 2/4 = 1/2
of the total amount. Altogether, Carmen will have saved ...
1/3 + 1/2 = (2/6) +(3/6) = 5/6
of the total amount by the end of the year. She will have saved ...
$1100 × 5/6 ≈ $916.67 . . . . year-end total savings
