If A→ = 3i^ +4j^ and  B→= 7i^ +24j^, the vector having the same magnitude as B→ and parallel to A→  is

|B→| = 72+(24)2= 625  = 25Unit vector in the direction of A will be A^ = 3i^+4j^5So required vector = 253i^+4j^5 = 15i^+20j^