A) wrist watch
B) table clock
C) stop watch
D) wall clock
Correct Answer: D
Solution :
| [d] Rate of increase in sales of wrist watch \[=\frac{28.7-21.3}{21.3}\times 100=\frac{7.4}{21.3}\times 100=34.74%\] Rate of increase in sales of table clock \[=\frac{22.3-9.5}{9.5}\times 100\] \[=\frac{12.8}{9.5}\times 100=134.73%\] Rate of increase in sales of Wall clock \[=\frac{32.7-30.7}{30.7}\times 100\] \[=\frac{2\times 100}{30.7}=6.514%\] Note There is no Increase in sales of stop watches. \[\therefore \]The minimum increase in sale in wall clocks. |
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