Answered

Discover answers to your most pressing questions at Westonci.ca, the ultimate Q&A platform that connects you with expert solutions. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform. Get immediate and reliable solutions to your questions from a community of experienced professionals on our platform.

*5. Gina's sister is 9 years older than Gina. Their combined ages add up to
49. How old is Gina? *
A. 29 years
B. 20 years
C. 19 years
D. 9 years

5 Ginas Sister Is 9 Years Older Than Gina Their Combined Ages Add Up To 49 How Old Is Gina A 29 Years B 20 Years C 19 Years D 9 Years class=

Sagot :

pinkpeguin101

Answer:

B. 20 years

Step-by-step explanation:

By using the process of trial and error, if Gina is 20 years old, that would mean her sister is 29 years old. This is because 20+9 is equal to 29. 29+20 sums up to 49.

nermay7

Answer: B. 20 years

Step-by-step explanation:

we will represent Gina sister's age by x and Gina's age by y.

Now were know that the age of Gina sister is 9 years older than Gina's so we can represent that by the  equation  x = y + 9

If we add their ages it is 49 so we can also represent that by the equation,

x + y = 49.

x = y + 9

x + y = 49

Using both equations, substitute x in the first equation into the second equation and solve for y.

(y + 9) + y = 49    solve for y , by first combining like terms.

2y + 9 = 49      subtract 9 from both sides

     -9        -9

2y = 40      divide both sides by 2

  y = 20

Since y was used to represent the age of Gina then Gina will be 20 years old.

Thank you for visiting. Our goal is to provide the most accurate answers for all your informational needs. Come back soon. Thank you for your visit. We're committed to providing you with the best information available. Return anytime for more. Thank you for using Westonci.ca. Come back for more in-depth answers to all your queries.