Cars emerging from a motorway arrive at a junction that splits the road into two separate lanes. The number of cars per hour that continue in either lane is constant. If 490 cars per hour were diverted from the left lane to the right lane, the number of cars entering the right lane per hour would be twice as big as the number of cars entering the left lane per hour. Alternatively, if 490 cars per hour were diverted from the right lane to the left lane, the number of cars entering the left lane per hour would be four times as great as the number of cars entering the right lane per hour. How many cars enter the left lane per hour?	Pick one: A) 1190 B) 1200 C) 1400 D) 700 E) 900
as per question 490 cars diverted from left lane to right lane. Thus we get equation R+490=2(L-490)   as per question 490 cars diverted from right lane to left lane .thus we get equation L+490=4(R-490)   by solving two equation i.e R +490 =2L-980 OR. R =2L -1470 1190ND L+490= 4R -1960 OR L= 4R -2450   BY SOLVING WE GET L= 4( 2L -1470) -2450 OR L= 8L -5880-2450 OR 8330 =7L THUS L =1190   1190
<result>A</result>
Cars emerging from a motorway arrive at a junction that splits the road into two separate lanes. The number of cars per hour that continue in either lane is constant. If 490 cars per hour were diverted from the left lane to the right lane, the number of cars entering the right lane per hour would be twice as big as the number of cars entering the left lane per hour. Alternatively, if 490 cars per hour were diverted from the right lane to the left lane, the number of cars entering the left lane per hour would be four times as great as the number of cars entering the right lane per hour. How many cars enter the left lane per hour?