B) 72
C) 120
D) 63
1/3 of the number = 1/3(x) =x/3
1/4 of a number subtracted from 1/3 of the number gives 12.
x/3-x/4 =12
x/3×4/4 – x/4×3/3 =12
4x/12 – 3x/12 =12
(4x-3x)/12=12
4x-3x=12×12
x=144
Therefore,the number is 144.
A) They have sharp eyesight
B) They can run very fast
C) They can hear ultrasonic waves
D) They are easily trainable
A) Sea water is still while river water is running
B) Salinity of sea water is more than that of river water
C) Density of sea water is more than that of river
D) None of these