Question

Knife is 3 times cost of spoon 9 spoons and 12 knifes is £82.80 what is 1 knife

Answer 1

Answer:

The cost of spoon is £1.84 and therefore the cost of one knife is £5.52.

Given :

• A knife is 3 times the cost of the spoon.

• 9 spoons and 12 knives costs £82.80.

Solution :

• This question is solve by creating a linear equation and linear equations are nothing but yet another subset of "equations".

• Linear calculations that requires more than one variable can be done with the help of linear equations.

• The standard form of a linear equation in one variable is ax + b = 0.

Now let x be the cost of spoon. Than the cost knife is 3x. It is given that 9 spoons and 12 knives costs £82.80.

$9x + 12 x (3x) = 82.809x + 36x = 82.8045x = 82.80x = 1.84$

Therefore the cost of 1 knife = 5.52

Step-by-step explanation:  $1.84 x 3 = 5.52$