1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tems11 [23]
3 years ago
15

An alloy is made of copper and iron by weight. 42% of it is copper and the rest is iron. If the alloy weights 55 kg, find the we

ight of copper and iron
Mathematics
2 answers:
faltersainse [42]3 years ago
7 0

Answer:

percent of iron in alloy= 100-42 = 58%

weight of the iron = 55×58÷100= 31.9

weight of iron= 31.9 kg

weight of copper= 55-31.9=23.1

weight of copper = 23.1

Step-by-step explanation:

[ I'm not sure but I think this is right ]

Anastasy [175]3 years ago
4 0

Answer: copper = 23.1 kg

             iron = 31.9 kg

Step-by-step explanation:

copper = 42% of 55

             = 42/100 * 55

            = 42/20 * 11

           = 21/10 * 11

          = 231/10

          = 23.1 kg

  so iron = 100% - 42%

             = 58%

so

58% of 55

= 58/100 * 55

= 58/20 * 11

=31.9 kg

You might be interested in
Which is bigger -7/11 or -2/3
Bad White [126]

Answer:

-2/3

Step-by-step explanation:

3 0
3 years ago
PLS HELP ME Giving brainliest!! On Monday, 316 students went on a trip to the zoo. All 6 buses were filled and 4 students had to
Sergeeva-Olga [200]

Answer:

xx = (316 - 4) ÷ 6

xx = 52 students per bus

4 0
3 years ago
Can anyone help me please, I will mark brainliest to the right answer
adoni [48]

Answer:

A

Step-by-step explanation:

First 4 sets of (x, y) show that when x increases 2, y increases 3. It seems the relationship is linear. But last 2 set show that x increases 1, y increases 3. So the relation is NOT linear

5 0
2 years ago
Katy is older than Alex and Beth. Sarn is
Sholpan [36]
This would be Delores because it goes katy, Delores, Alex, Sam, Beth
8 0
2 years ago
Free time for everyone
sergiy2304 [10]

Answer:

OK

Step-by-step explanation:

*Undertale playing*

7 0
2 years ago
Read 2 more answers
Other questions:
  • Using this nomogram, what is the magnitude of an earthquake that is 500 km from a seismic station and has an amplitude of 0.2 mm
    6·1 answer
  • Estimate 3/5 x 10/11
    10·2 answers
  • Mr Lee left his fortune to his 3 sons, 4 daughters and his wife. Each son received twice as much as each daughter and his wife r
    15·1 answer
  • Logx - logx - 1^2 = x - 4
    5·1 answer
  • There are 42 books in Mr. Long’s class library. Some books are paperback, some books are hard cover. There are 18 paperback book
    8·1 answer
  • 8(4u-1)-12u=11(2u-6)
    11·1 answer
  • Pls help :(
    9·2 answers
  • Please helppppppppppp​
    12·1 answer
  • How do I find the height of a cone if I know its area and diameter?​
    12·1 answer
  • We made 64 robots. We'll keep 8 of the robots and pack the rest into boxes of 4. How many boxes do we need
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!