Raja and goja are at a distance of 48 km. They start at the same time to meet each other travelling at the rate of 7 km/hr and 5km/hr respectively. They meet after time ?
(A) 3 hours
(B) 7 hours
(C) 5 hours
(D) 4 hours
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Time = x
x(7+5) = 48
x = 48/12 = 4hrs
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