1) Three numbers are in the ratio 4:5:6 and their average is 25. The largest number is : A) 30 B) 32 C) 36 D) 42 E) 45 Answer: Option AExplanation:Let the numbers be 4x, 5x and 6x.Then, 4x+5x+6x3=25⇔5x=25⇔x=25.∴Largestnumber=6x=30.