The last one is correct answer
Answer:
x=4
Step-by-step explanation:
since triangles are proportional by 2:1, then:
16/2=3x-4
8=3x-4
3x=12
x=4
3/5x+22=28 (Simplify, get all the whole numbers on one side)
-22 -22
5(3/5x)=(6)5 (Get rid of the fraction by multiplying everything by 5)
3x=30 (Get the variable by itself, divide by 3)
x=10
Answer: 3 years
Step-by-step explanation:
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