Answer:
40 kilometres
Step-by-step explanation:
3cm : 10 kilometres
x4 x4
12cm : 40 kilometres
Answer:
0.045
Step-by-step explanation:
1.5 percent *3 =
(1.5:100)*3 =
(1.5*3):100 =
4.5:100 = 0.045
This is a mixture problem.
Let the 9 karat gold to be mixed be x. The 18 karat would weight (200 - x). Since the total = 200g.
mass1 * karat1 + mass2*karat = total mass * total carat
Let mass1 be x g. mass 2 would be = (200 -x)
karat 1 = 9 karat 2 = 18
Total mass = 200g.
Total karat = 14.
9*x + 18*(200 -x) = 14*200
9x + 18*200 - 18*x = 14*200
18*200 + 9x - 18x = 14*200
3600 - 9x = 2800
3600 - 2800 = 9x
800 = 9x
9x = 800
x = 800/9
x ≈ 88.89
Therefore 88.89 grams of 9 karat gold must be mixed.
Answer:
../////////////////////////////////////////////
Step-by-step explanation:
Answer:
2/4
Step-by-step explanation:
