Three cars A,B and C started at same point and time. After A reach 50 km, B and C are backward by 10km and 20 km. When B reach 200km, find the position of A and C?  Choose the correct choice from the following answers
A) 240 and 160km B) 170 and 230 km C) 180 and 240 km D) 235 and 165 km E) 250 and 150 km
250 and 150 kmxplanation:   A:B = 50 : 40 = 5 : 4   A:C = 50 : 30 = 5 : 3   =&gt;B:C = 4:3   When B covers 40 km , C Covers 30 km   When B covers 200 km , C Covers   =&gt; 150 km   When B covers 40 km , A Covers 50 km   When B covers 200 km , A Covers   =&gt; 250 km   Answer: 250 and 150 km
<result>E</result>
Three cars A,B and C started at same point and time. After A reach 50 km, B and C are backward by 10km and 20 km. When B reach 200km, find the position of A and C?