Question

The cost of 2 Red balls and 5 Blue balls was found to be ₹ 160. Assume the cost of one red ball be r and cost of one blue ball be b.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

Cost of 1 Red ball be 'r'
Hence the cost of 2 red ball will be 2r

Cost of 1 Blue ball be 'b'
Hence the cost of 5 blue ball will be 5b

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