Question

If the coefficient of range is $0.18$ and the largest value is $7.44$,then the smallest value is?

• A. $3.23$
• B. $4.15$
• C. $5.17$
• D. $5.14$

Answer 1

The correct option is C $5.17$

Coefficient of range$=\frac{x_m-x_0}{x_m+x_0}=\frac{7.44-x_0}{7.44+x_0}$

$0.18(7.44+x_0)=7.44-x_0$

$1.18x_0=7.44-7.44\times 0.18$

$1.18x_0=6.1008$

$x_0=5.17016\approx 5.17$