30
Aaditya received 94 birthday greetings
Faceache - F = 3/4 S (F represents his age)
Squeal - S = 4/3 F
Heho - H= 1/5 S =4/3*1/5 F=4/15 F
Myplace - M = 2H =2*4/15 F=8/15 F
F+4/3F+4/15F+8/15F=94 => F*(1+4/3+4/15+8/15)=94 => F*47/15=94 =>F=30
=> F=30, S=40, H=8, M=16