Question

find P and Q two positive numbers such that the sum of P and Q is 640 and the difference between P and Q is 80​

Answer 1

Answer:

P=360

Q=280

Step-by-step explanation:

P+Q=640

P=640-Q

P-Q=80

640-Q-Q=80

640-2Q=80

2Q=640-80

2Q=560

Q=280

P=640-280

P=360