We have a question: At a cafe, the breakfast plate has two eggs and twice as many bacon strips as eggs. If 14 customers order breakfast plates, how many bacon strips does the cook need to fry?
And an answer: 56
So how you got the answer?
Each breakfast plate has 2 x 2 = 4 bacon strips. The cook needs to fry 14 x 4 = 56 bacon strips.

We have a question: A bar of steel weighs twice the mass of a bar of tin. If a steel bar also weighs 20 kgs more than a copper bar and a copper bar weighs 90 kgs, calculate the total weight of a container with 20 bars of each type of metal.
And an answer: 5100
So how you got the answer?
The total weight of 20 bars of copper is 20 * 90 = 1800kgs. If a copper bar weighs 90 kgs, and a steel bar weighs 20 kgs more than a copper bar, the weight of a steel bar is 90 + 20 = 110 kgs. If a bar of steel weighs 110 kgs, 20 bars will weigh 20 * 110 = 2200kgs. The total weight of 20 bars of copper and steel is 2200 + 1800 = 4000 kgs. A bar of steel weighs twice the mass of a bar of tin, meaning a bar of tin weighs 110 / 2 = 55 kgs. The total weight of 20 bars of tins is 55 * 20 = 1100 kgs. The total weight of 20 bars of each metal is 4000 + 1100 = 5100 kgs.

We have a question: I bought a TV for $1700 excluding tax. What is the price of the television when calculating 15% of the value-added tax?
And an answer: 1955
So how you got the answer?
The value - added tax is 1700 * 15% = 255. The price of the television including tax 1700 + 255 = $1955.