![jackb9361](/avatars/48149.jpg)
jackb9361
15.10.2019 •
Mathematics
Maria is ten years older than josé, and next year she will be twice as old as josé. how old are they now?
Solved
Show answers
More tips
- F Food and Cooking Why Doesn t the Confirmation Link Come to Email?...
- L Leisure and Entertainment What Movies You Should Watch: A Guideline to Make the Right Decision...
- F Family and Home How to Choose a Baby Stroller: Tips from Experienced Parents...
- H Health and Medicine 5 Simple Steps to Quit Smoking for Good...
- H Health and Medicine Coughing: Causes, Types, and Treatment Methods...
- H Health and Medicine How to Treat the Flu: A Comprehensive Guide...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
Answers on questions: Mathematics
- M Mathematics Find the cube of x+3.(x+3)(x+3)(x+3)...
- M Mathematics The shaded region on the grid below shows the area that underwater explorers have already explored in looking for sunken treasure. Which point on the grid have they NOT...
- M Mathematics A sectore with a radius of 15cm has a centeral angle measure of 8pi/5 (in radians)...
- M Mathematics What is an expression equivalent to 2(7 x + 3 - x ) ??...
- M Mathematics Plz help with slope question...
- M Mathematics Oliver removed 56 marbles from his marble box and put them into 8 equal groups. How many marbles were in each group?...
- M Mathematics Part 1. Using the two functions listed below, insert numbers in place of the letters a, b, c, and d so that f(x) and g(x) are inverses. f(x)= x+a b g(x)=cx−d Part 2. Show...
- M Mathematics What is the area of the circle below? (Use 3.14 for Pi) A. 31.4 square cm B. 15.7 square cm C. 78.5 square cm D. 157 square cm...
- M Mathematics Plz help with slope question...
- M Mathematics Given f(x) contains the point (-5, 6), find the point contained on f (x)....
Ответ:
Maria's age now is 19 years old
Jose's age now is 9 years old
Explanation:
Assume that Maria's current age is x and that Jose's current age is y
We are given that:
1- Maria is 10 years older than Jose.
This means that:
x = y + 10 > equation I\
2- Next year, Maria will be twice as old as Jose.
This means that:
Maria's age next year = 2 * Jose's age next year
x + 1 = 2(y+1)
x + 1 = 2y + 2 > equation II
Substitute with equation I in equation II and solve for y as follows:
x + 1 = 2y + 2
y + 10 + 1 = 2y + 2
y + 11 = 2y + 2
2y - y = 11 - 2
y = 9
Substitute with y in equation I to get x as follows:
x = y + 10
x = 9 + 10
x = 19
Based on the above calculations:
Maria's current age = x = 19 years old
Jose's current age = y = 9 years old
Hope this helps :)
Ответ:
welcome
Step-by-step explanation: