13. A car reached Delhi from Meerut in 35 min with an average speed of 69 km/h. If the average speed is increased by 36 km/h, how long will it take to cover the same distance? (1) 24 min (2) 27 min (3) 23 min (4) 29 min

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( l ) Deini [ begin{array}{l} text { tom }=35 text { min } 80 mathrm{m}=69 mathrm{km} / mathrm{h} text { new avg epeed, } 8^{prime}=69+36=105 mathrm{km} / mathrm{h} end{array} ] let the distance be ( d ), and new time be ( left(t^{prime}right) )

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