Michael breeds chickens and ducks. Last month, he sold 25 chickens and 20 ducks for $250. This month, he sold 25 chickens and 30 ducks for $500. How much does a chicken cost?
How much does a duck cost?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

If rs 900 amounts to rs 1044 in 4 years, what sum will amount to 1368 in 3 1/2 years at the same rate