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1989 AJHSME Problems/Problem 6

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Problem

If the markings on the number line are equally spaced, what is the number \text{y}?

draw((-4,0)--(26,0),Arrows);for(int a=0; a<6; ++a) {  draw((4a,-1)--(4a,1)); }label("0",(0,-1),S); label("2...

\text{(A)}\ 3 \qquad \text{(B)}\ 10 \qquad \text{(C)}\ 12 \qquad \text{(D)}\ 15 \qquad \text{(E)}\ 16

Solution

Five steps are taken to get from 0 to 20. Each step is of equal size, so each step is 4. Three steps are taken from 0 to y, so y=3\times 4=12\rightarrow \boxed{\text{C}}.

See Also

1989 AJHSME (ProblemsResources)
Preceded by
Problem 5
Followed by
Problem 7
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