Q4. 
When processing flowernectar into honeybees' extract, a considerable amount of water gets reduced. How much flowernectar must be processed to yield 1kg of honey, if nectar contains $50%$ water, and the honey obtained from this nectar contains $15%$ water? 
A.  1.5 kgs 

B.  1.7 kgs 

C.  3.33 kgs 

D.  None of these 
Q5. 
$30%$ of the men are more than 25 years old and $80%$ of the men are less than or equal to 50 years old. $20%$ of all men play football. If $20%$ of the men above the age of 50 play football, what percentage of the football players are less than or equal to 50 years? 
A.  $15\%$ 

B.  $20\%$ 

C.  $80\%$ 

D.  $70\%$ 