1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Irina-Kira [14]
3 years ago
10

A father is 60 years old and his son is half his age. how old was the boy when his father was four times his age?

Mathematics
2 answers:
Natalka [10]3 years ago
7 0
Ok so
fater=60
son is 1/2
60 times 1/2=30
they aer 30 years apart

how long ago was father age 4 times son age
father's age x year ago=60-x
son's age x years ago=30-x

60-x=4(30-x)
distribute
60-x=120-4x
add 4x to both sides
60+3x=120
minus 60 from both sides
3x=60
divide both sides by 3
x=20
20 years ago

30-20=10

the boy was 10 years old
Arte-miy333 [17]3 years ago
4 0
He was 10 while his father was 40
You might be interested in
Which of the following statements best describes an angle that is in standard​ position? A. An angle is in standard position if
lorasvet [3.4K]

Answer: D. an angle is in standard position if the vertex is at the origin of a rectangular coordinate system and the initial side lies along the positive x-axis.




8 0
3 years ago
A student measured the volume of an iron nail to be 0.880 cm3. She found its mass was 6.92grams. What is the density of iron?
Natali [406]

Answs,dv

Step-by-step explanation:

8 0
2 years ago
Write as a single power of 8.<br> 8 to the power of 8<br><br> ÷<br> 8 to the power of 2
OLEGan [10]

Answer: 8^6

Step-by-step explanation:

\frac{8^8}{8^2} =    8^{6}  subtract the bottom exponent from the top exponent.

7 0
3 years ago
32% as a fraction in lowest terms
TiliK225 [7]
32% means 32/100

32/100 = 16/50 = 8/25, which is the lowest you can get because you can no longer divide it to get a whole number.

A; 8/25.
3 0
2 years ago
30% of doctors on a hospital are female. if there are 780 doctors altogether, how many doctors are female ? round to the nearest
Archy [21]
30% as a decimal is 0.3

Multiply 780 by 0.3
780(0.3)=234 female doctors
4 0
3 years ago
Read 2 more answers
Other questions:
  • Why did so many Southern cotton planters move to Texas in the mid-1800s?
    14·1 answer
  • 3x - 4y = 19; 8x + y = 12<br> Are the equations parallel, perpendicular, or neither
    13·1 answer
  • I need this to be answered ASAP
    13·1 answer
  • A store sells 12 cans of nuts for $27. How much would it cost u to buy 7 cans of nuts
    14·2 answers
  • 3(2x - 5) - 8x = -2(x - 1)
    8·1 answer
  • Your factory installed tires have a comfort that 95 inches if the odometer reading reading is 32,000 miles on your car you have
    5·1 answer
  • A pizza company offers a 5-topping large pizza for $22. They also offer a 3-topping large pizza for $18. Write a linear equation
    14·1 answer
  • Solve the following systems of equations. To unlock puzzle three find the product of each solution (ordered pair-x and y value)
    14·1 answer
  • Yuri purchased 8 trees to have planted at his house. The store charged a delivery fee of $5 per tree.
    8·2 answers
  • What is the value of p
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!