I you use 1/6 of the bag for 1/2 a pound then you need to set up a proportion.
1/6 bag / 1 bag = 1/2 pound / x pounds Cross Multiply
(1/6)*x = 1/2 pounds * 1 bag Divide by 1/6
Remember: in a 4 level fraction, the denominator inverts and multiplies.
x =

3 pounds <<<<
answer
i believe the answer is -3b+21
The Golden number is one of the roots of x²-x-1=0 and x = (1+√5)/2= 1.618
It's just a mathematical constant you can come across in trigonometry, geometry, sequence like Fibonacci and others. You may find it in fractals also and in many shapes in the nature but not necessarily always true.
It might be a coincidence in some natural shapes, but definitely it is a recognized math contant useful in many math domains
Are = radius squared times pie so 12*12 = 144 so 144 times pi 3.14*144 = 452.16 is your answer
Given : Shopkeeper had 10m Cartons of Eggs
Given : He sold 2 of the Cartons and used 1 Carton to cook for his Family
⇒ Shopkeeper took 3 Cartons of Eggs form 10m Cartons of Eggs
⇒ The Shopkeeper is left with (10m - 3) Cartons of Eggs
Option (1) is the Answer