Answer:
i guess its linear pair type questions
i have done like this
Answer:
<h2>See below</h2>
Step-by-step explanation:
For every odd place, the first one, the third one, and so on, the rule to increase each number by 2 then 3 then 5. This is because every even numbered digit, shows how much to increase the other digits by, minus one at the beginning, no change in the middle, and plus one at the end.
I'm always happy to help :)
Let x be your first alloy
2/5x+7/10(30-x)=1/2(30)
4x+210-7x=150
3x=60
x=20
So, you need 20 lbs of the first alloy, and 10 parts of the second to make 30 lbs of half iron and half silver alloy!
Answer:
Advance tickets-$15
Same-day tickets-$20
Step-by-step explanation:
let x be the cost of advance tickets and y cost of same-day tickets:

Given that there were 40 advance and 25 same-day tickets for a total of $1100:

#Make x the subject in i and substitute in ii:

Hence, advance tickets cost $15 each while same-day tickets cost $20 each.