Answer: The father is 37 years and the son is 7 years
Step-by-step explanation:
Let x represent the present age of the father.
Let y represent the present age of the son.
Three years hence a father will four times as old as his son will be. This means that
x + 3 = 4(y + 3)
x + 3 = 4y + 12
x - 4y = 12 - 3
x - 4y = 9- - - - - - - - - - - - - - - -1
Before two years he was seven times as old as his son was. This means that
(x - 2) = 7(y - 2)
x - 2 = 7y - 14
x - 7y = - 14 + 2
x - 7y = - 12- - - - - - - - - - - - - - -2
Subtracting equation 2 from equation 1, it becomes
3y = 21
y = 21.3 = 7
Substituting y = 7 into equation 1, it becomes
x - 4 × 7 = 9
x - 28 = 9
x = 9 + 28
x = 37
Answer:
<u>True</u>
Step-by-step explanation:
A Kilogram (kilo) is a unit of measuring metric mass. To perform this conversion you need to note that
1 Kilogram (kg) = 1000 grams
Which means that <em>converting Kilogram to Grams </em>would involve multiplying kilogram by 1000.
For example, 100 kg to grams = 100 * 1000 = 100,000 Grams
30% = .3
120 x .3 = 40
120 + 40 = 160
Anna makes 160 dolls
Answer:
35
Step-by-step explanation:
70 time 0.5
1. multiply 7 times 5 which equals 35
2. move decimal one time because have a zero in 70
3. your answer is 35
if need help i am here plz ask questions if needed
A. 1/6, .16666666, 16.6666666%
B. 4/6, .64, 64%
C. 5/6, .80, 80%
