If a clock takes seven seconds to strike seven, how long will it take to strike ten ?
Choose the correct choice from the following answers
A) 7 seconds	B) 9 seconds	C) 10 seconds	D) 10.5 seconds	E) None of these
for 7 strikes it have 6 interval so for 1 interval it takes 7/6sec   therefor for 10 strike it require 9 interval so time required=(7/6)*9= 
<gadget id="calculator">(7/6)*9</gadget>
<output>21/2 = around 10.5</output>
10.5sec   ANSWER:10.5 seconds
<result>D</result>
If a clock takes seven seconds to strike seven, how long will it take to strike ten ?