Question

4. What is the total weight of:
1 kg? of beer, kg. of pork andl ke of
potatoes?
5. Is the sum of:
3
and more than one wnoler Solve and answer YES on
3
NO
$is \: the \: sum \: of \frac{3}{10} and \: \frac{8}{15} more \: than \: one \: whole \: \: solve \: and \: answer \: yes \: or \: no$
​

Answer 1

Answer:

x 65 55 45 35

y 20 40 60 80

Let the cost of 1 kg of apples be x and that of 1 kg be y

So the algebraic representation can be as follows:

2x+y=160

4x+2y=300⇒2x+y=150

The situation can be represented graphically by plotting these two equations.

2x+y=160⇒y=160−2x

x 70 60 50 40

y=160−2x 20 40 60 80

2x+y=150⇒y=150−2x

x 65 55 45 35

y=150−2x 20 40 60 80

We can see that the lines do not intersect anywhere, i.e. they are parallel. Hence we can not arrive at a solution.

Answer 2

x 65 55 45 35

y 20 40 60 80

Let the cost of 1 kg of apples be x and that of

1 kg be y

So the algebraic representation can be as follows:

2x+y=160

4x+2y=300→2x+y=150

The situation can be represented graphically by plotting these two equations.

2x+y=160 ⇒y=160-2x

x 70 60 50 40 y-160-2x 20 40 60 80

2x+y=150⇒y=150-2x

x 65 55 45 35

y=150-2x 20 40 60 80

We can see that the lines do not intersect anywhere, i.e. they are parallel. Hence we can not arrive at a solution.