A boat covers a distance of 30 km downstream in 2 hours while it take 6 hours to cover the same distance upstream. If the speed of the current is half of the speed of the boat then what is the speed of the boat in km per hour ?

Options

The strongest acid amongst the following compounds is:

A. CH3COOH

B. HCOOH

C. CH3CH2CH(Cl)CO2H

D. ClCH2CH2CH2COOH

A. CH3COOH

B. HCOOH

C. CH3CH2CH(Cl)CO2H

D. ClCH2CH2CH2COOH

A. CH3COOH

B. HCOOH

C. CH3CH2CH(Cl)CO2H

D. ClCH2CH2CH2COOH

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