Uncle Tom spends 
of his household expenses on groceries and 
of it on utilities. The rest of his household expenses is spent on pet grooming.
(a) If each pet uses 
of his household expenses, then how many pets does Uncle Tom have?
(b) If he spends ₹ 2100 on pet grooming, then how much is household expenses?
A(a)-7; (b)- ₹ 3000
B(a)-7; (b)- ₹ 4500
C(a)-12; (b)- ₹ 3500
D(a)-10; (b)- ₹ 2400
This is one of the hard questions