Question

Answer both questions fast with formulas ??

Answer 1

`(p)/(2)+3`

Explanation:

Subtract 3 bags of "safe measure" rice:

12 - 3 = 9 bags

Each bag serves 2 people: 2 x 9 = 18 people

Therefore,
`(18)/(2) +3=12`

So the answer is
`(p)/(2)+3`