How much will it cost?

Question

You read online that a 15 ft by 20 ft brick patio would cost about $2,275 to have professionally installed. Estimate the cost of having a 23 by 28 ft brick patio installed. 

Answer 1

c/23x28=2275/15x20

c =2275x23x14/150 = $4,883.67, rounded up to nearest cent

it's a little over twice as large, so a little over twice as costly