यदि एक यात्रा का `[4-4/(1+1/(3+1/(2+1/4)))]^(th)` का भाग तय करने में दस मिनट लगता है तो उसी यात्रा का `3/5` भाग तय करनें में कितना समय लगेगा?

Options

A. 40 minutes
B. 45 minutes
C. 48 minutes
D. 36 minutes

Answer

C

Explanation

`4-5/(1+1/(3+1/(2+1/4)))`
`= 4-5/(1+1/(3+1/(9/4)))`
`=4-5/(1+1/(+4/9))=4-5/(1+1/(31/9))`
`=4-5/(1+9/31)=4-5/(40/31)`
`=4-(5xx31)/40=4-31/8=1/8`
According to the question
`1/8` part `=10` minutes
`1` part `=80` minutes
`3/5` part `=80xx3/5=48` minutes