Question

The cost of 2 Red balls and 5 Blue balls on a day was found to be Rs. 160. The correct expression for this situation is

• A. 2r + 5 b = 160
• B. 3r + 5b = 160
• C. 160(r + b) = 2 + 5
• D. None of these

Answer 1

The correct option is A

2r + 5 b = 160

Let the cost of 1 Red ball be 'r'

Let the cost of 1 Blue ball be 'b'

Total cost of an item = Cost of one item x Total number of items

So, the algebraic expression will be 2r + 5b = 160