X=15% alloy
y=8% alloy
x+y=40
y=40-x
0.15x+0.08y=40*0.10
0.15x+0.08(40-x)=40*0.1
times 100 both sides for easy
15x+8(40-x)=400
15x+320-8x=400
7x+320=400
minus 320 from both sides
7x=80
divide both sides by 7
x=80/7
x+y=40
80/7+y=280/7
y=200/7
aprox
x=11.4lb
y=28.6lb
11.4lb of 15%
28.6lb of the 8%
what????
Answer:
194/3
Step-by-step explanation:
Answer:
7
Step-by-step explanation:
first and foremost the two consecutive numbers will be x and x + 1, which will equal to 2x + 1.
2x + 1 > 15
2x + 1 = 15
Collect like terms
2x = 15 - 1
2x = 14
Divide both sides by 2
x = 7
Answer:
157 boxes
Step-by-step explanation:
Take the total amount of ounces to be made, and divide by the 'size' of the box. with 7,536 ounces to be made and the boxes being 48 ounces: 7536/48 will equal 157 boxes filled.
180 + 30x = 60 + 50x
⇒ 20x = 120
⇒ x = 6 minutes
<span>it will take 6 minutes for Millie to catch up with Ben</span>
