Post a New Question

Math

posted by .

Please help! It says- A machine takes 4.0 hours to make 8 parts. At that rate, how many parts can the machine make in 31.0 hours? Anybody want to explain it to me?

  • Math -

    One way to solve this is with a proportion.

    8/4 = x/31

    Cross multiply and solve for x.

    4x = 248

    x = 248/4

    x = 62 parts

  • Math -

    Thank you Ms. Sue! I appreciate it!

  • Math -

    You're welcome, Lizzy.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    "fashion furniture makes two kinds of chairs; rockers and recliners. two machinges a and b are used. machine a is limited to 20 hours per day. machine b is limited to 15 hours per day. machine a takes two hours to make each rocker …
  2. math

    alter working 4 hours, frank has made 21 machine parts.at the same rate how many parts can he make in 7 hours?
  3. math

    After working 4 hours, Frank has made 21 machine parts. At the same rate, how many parts can he make in 7 hours?
  4. math

    After working 4 hours frank made 21 machine parts. it's the same rate how many parts can he make in 7 hours
  5. stats

    Suppose a shipment of 500 machine parts contains 62 defective and 438 non-defective machine parts. From the shipment you take a random sample of 25. You are interested in the number of defective machine parts out of 25 trials and corresponding …
  6. Mathematics

    A machine takes 4.2 hours to make 7 parts. At that rate, how many parts can the machine make in 28.8 hours 48 parts 41 parts 172 parts 17 parts
  7. MATH

    1. A factory manufactures two products, each requiring the use of three machines. The first machine can be used at most 60 hours; the second machine at most 30 hours; and the third machine at most 80 hours. The first product requires …
  8. Quantitative, stastics and business

    A company has three machines A, B and C which all produce the same two parts, X and Y. of all the parts produced, machine A produces 60%, machine B produces 30%, and machine C produces the rest. 40% of the parts made by machine A are …
  9. math

    Jason is considering purchasing a new machine to make plastic silverware. The machine produces 1,000 pieces of silverware in two hours. One box contains 50 pieces of silverware and sells for $3.00. If the machine costs $9,000, and …
  10. maths

    Jason is considering to purchase a new machine to make plastic silverware.the machine produces 1000 pieces of silverware in two hours. one box contains 50 pieces silverware and sells for $3.00.if the machine cost $9000 and runs for …

More Similar Questions

Post a New Question