After 16 years

After 16 years, Dana will be five times as old as she was four years ago. In how many years will Dana celebrate her 16th birthday?

Final Answer:

x =  7

Step-by-step explanation:

r+16=5(r4) x=16r  r+16=5 (r4)  4r=36 r+x=16  Row241 Row1Row2 x=7  r=436=9  r=9



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