Question

A ladder has 10 steps a man caary some weight he climb 2 steps in 1 second and 2 second he goes down 1 steps how many second to reach 10 steps of ladder

Answer 1

labour goes in 1 sec = 2 steps  

then,  

he get down in next 2 sec = 1 step .

so, finally he goes up in 1 step in = 3sec .

hence , he goes 10 steps in =  

3×10 = 30 sec .