Roberto's scout troop is making some birdhouses for the park district. The basic birdhouse uses one half-sheet of plywood and the deluxe bridhouse uses three half-sheets of plywood. They plan to build a total of 24 birdhouses, and the scoutmaster has 40 half-sheet of plywood. If b is the number of basic birdhouses to describe this situation would be:
{b+d=24
{b+3d=40
Add the two equations and combine like terms. Can you solve the resulting equation? if so solve it and determine the value of both b and d. If not, explain why you cannot. Then Subtract equations and combine like terms. Can you solve the resulting equation? If so, solve it and determine the value of both b and d. If not, explain why you cannot.
How do I do this?
They told you step-by-step what to do.
hint: subtract the two equations ...
b+3d = 40
b+d = 24 , subtract
2d = 16
d = 8
sub that back into b+d = 24
to get b = 16