I m not sure of the answer but this is my best try
Papaya: Mango = 3:4
Papaya: Apple = 5:2
Lets take no of papaya as x
So, 5/2 = x/27
By cross- multiplication, x= 27*5/2
x= 67.5
Total number of papayas = 67.5
Lets take number of mangoes as y
So, 3/4 = 67.5/y
By cross multiplication, y= 90
Therefore, total number of mangoes are 90 mangoes.