Makahanap ng mga eksaktong solusyon sa iyong mga problema gamit ang IDNStudy.com. Ang aming platform ay nagbibigay ng mga maaasahang sagot upang matulungan kang gumawa ng matalinong desisyon nang mabilis at madali.




Age Word Problem





5 years from now Sharon will be twice as old as Tiffany. 

The current sum of the ages of Sharon and Tiffany is 86. 

How old is Tiffany right now?





Sagot :

[tex]Sharon : \ x \ \ years\\Tifany : \ y \ \ years\\\\Sharon : \ \ x + 5 = 2(y+ 5) \\Sharon + Tiffany : \ \ x+y = 86\\\\\begin{cases} x + 5 = 2(y+ 5) \\x+y=86 \end{cases}[/tex]

[tex]\begin{cases} x + 5 = 2 y+ 10 \\ y=86 -x \end{cases}\\\\substitution :\\x+5=2(86-x)+10 \\x+5=172 -2x+10\\ \\x+2x=172+10-5\\3x=177 \ \ / :3\\x=59 \ yares[/tex]

[tex]y=86-x\\y=86-59 \\ \\y= 27 \ yares \\ \\ Answer : \ \ Tiffany \ is \ now \ 27 \ years.[/tex]




86/2=43
43-5=38
38/2=16
16+5=21

answer: 21 y/o