It would be 20 years because if En is 100 Mark will be 25. 25 times 4 is equal to 100
Answer:
the largest possible value of x is 21
Step-by-step explanation:
39/x =3
3x =39
x=39/3
x= 13
51/x =3
3x =51
x= 51/3
x= 17
63/x =3
3x= 63
x= 63/3
x= 21
2x+4y=450
2x=450-4y
x=450-4y÷2----- equation 1
4x+2y=420
4x=420-2y
x=420-2y÷4----- equation 2
putting the value of x in equation 1
x=450-4y÷2
420-2y÷4=450-4y÷2
2(420-2y)=4(450-4y)
840-4y=1800-16y
840-1800=-16y-4y
-960= -12y
y=80
putting the value of y in equation1
2x+4y=450
2x+4×80=450
2x+320=450
2x=450-320
2x=130
x=130÷2
x=65
<h2> the value of x is 65 and y is 80</h2>
Number of swings = x
Number of slides = y
First condition:
number of slides must be more than 3 times number of swings
This means that: y > 3x
Second condition:
each swing cost 275$ and each slide costs 168$. They cannot spend more than 1250$. This means that the sum of costs of swings and slides should not exceed 1250$ (should be less than or equal to 1250$)
This means that: <span>275x+168y ≤ 1250
Based on this:
The correct choices are: b and d</span>
Answer:
w = 20
Step-by-step explanation:
<u>Step 1: Add 1/3 to both sides</u>
1/4w - 1/3 + 1/3 = 4 2/3 + 1/3
1/4w = 4 3/3
1/4w = 5
<u>Step 2: Multiply both sides by 4</u>
1/4w * 4 = 5 * 4
w = 20
Answer: w = 20
