Answer:
B
Step-by-step explanation:
5*9=45
1*9=9
Then add both numbers together
45+9=54
Thirteen plus seven is twenty. One fourth of twenty is five.
The answer is five.
Answer:
x=2,y=2
Step-by-step explanation:
This question is a simultaneous equation
So let's solve
3x+y=8...(1)
2x+2y=8....(2)
Multiply (1) by 2
6x+2y=16...(3)
Substrate (2) From (3)
4x=8
Let's make x the subject of formula by dividing both sides by 4
x=2
So let's substitute the value of x into (1)
3x+y=8
3(2)+y=8
6+y=8
y=8-6
y=2
Therefore x is 2,y is 2
The answer would be letter B. You can see that the price of the demanded products as the time passes by decreases. So the answer is letter B.