Question

P-Q=20 and P+Q=80. What is P?

Answer 1

Answer:

The value of P is 50.

Step-by-step explanation:

P-Q=20......... (1)

P+Q=80.........(2)

Adding equations (1)&(2),we get.....

2P=100

P=100/2

P=50

By substituting P in equation (2),we get......

50+Q=80

Q=80-50

Q=30

Therefore, the value of P=50&Q=30

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Answer 2

P-Q=20

P=20+Q.......1)

P+Q=80

P=80-Q.......2)

FROM 1) AND 2)

20+Q=80-Q

2Q=60

Q=30

PUTTING VALUE OF Q IN 1)

P=20+30

P=50

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