0 votes 0 votes A man travels $35$ km partly at $4$ $kmph$ and partly at $5$ $kmph$. If he covers the former distance at $5$ $kmph$ and the later distance at $4$ $kmph$, he could cover $2$ km more in the same time. The time taken to cover the whole distance at the original rate (in hours) is : $4\frac{1}{2}$ $7$ $8$ $9$ Quantitative Aptitude nielit2019feb-scientistd speed-distance-time + – Lakshman Bhaiya asked Apr 3, 2020 • edited Nov 1, 2020 by soujanyareddy13 Lakshman Bhaiya 13.8k points 835 views answer comment Share See all 0 reply Please log in or register to add a comment.
0 votes 0 votes option C,i.e 8 hours s_dr_13 answered Mar 29, 2022 s_dr_13 228 points comment Share See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Answer is C Case 1 $4t_{1}+5t_{2}=35$ ------(1) Case 2 $5t_{1}+4t_{2}=37$ ------(2) On solving simultaneous equations (1) and (2), we will get t1 = 5hrs and t2 = 3hrs The time taken to cover the whole distance = t1+t2 = 5+3= 8 hrs neethu_seb answered Dec 13, 2022 neethu_seb 3.5k points comment Share See all 0 reply Please log in or register to add a comment.