Rahul buys 3 types of balls. Type 1 costs ₹10 each, Type 2 costs ₹8 ea

This question was asked in Ex 4.4, 5

Rahul buys 3 types of balls. Type 1 costs ₹10 each, Type 2 costs ₹8 each, and
Type 3 costs ₹5 each. What is the least number balls of each type he should buy so
that he spends an equal amount on each type of ball?