_is an equation that can be used to solve the proportion

What is the remainder when 2872 is divided by 76? a) 51 b) 57 c) 60 d) 63

$5400 is? invested, part of it at 11? % and part of it at 8? %. for a certain? year, the total yield is ? $522.00. how much was invested at each? rate?

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?