Question

The cost of 2 red balls and 5 blue balls is ₹160. The correct expression for this is ______ such that 'r' represents cost of one red ball and 'b' represents cost of one blue ball.

• A. $r+5b=160$
• B. $2r+b=160$
• C. $160(r+b)=2+5$
• D. $2r+5b=160$

Answer 1

The correct option is D

$2r+5b=160$

Let the cost of 1 Red ball be 'r' and let the cost of 1 Blue ball be 'b'.

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