Answer: 20 = 5 × n ; n = 4
How do we know?
If the blue jar has 20 marbles, and the blue jar has 5 times as many as the red jar, and n is how many marbles are in the red jar then we can use this equation:
n × 5 = 20
So for the first portion of your question the answer would be: 20 = 5 × n
Now we have to solve for n:
20/5 = n
4 = n
So the answer to your second part would be: n = 4
48÷8=6
6×20=120
so 20 plates cost 120 dollars
The 4 in the ten thousands place is 10 times the amount of the 4 in the thousands place
This is how you would solve the question.
<h3>
Answer:</h3>
<u>Perimeter of rectangular garden = 2(l + b)</u>
- 2(y + 2 + 4y - 1)
- 2y + 4 + 8y - 2
- 10y + 2.
<u>Hence, perimeter of given garden is 10y + 2</u>.