machines questions

Machine - From times immemorial, man has used machines to help him in his work. Today, we are dependent on machine for almost every task. When we think of machines we always tend to think of big and complicated units with many moving parts like wheels and rol..

From times immemorial, man has used machines to help him in his work. Today, we are dependent on machine for almost every task. When we think of machines we always tend to think of big and complicated units with many moving parts like wheels and rollers and gears..

There are 78 workers for every 12 machines in a factory. What is the ratio of the number of machines to workers? => 2 : 13 or 13 : 2 or 1 : 13 or 13 : 1..

A machine can produce 28 bars of soap in one hour. How many bars of soap can the machine produce in 10 hours? => 270 or 290 or 260 or 280..

A machine produces 24 items in 4 hours. How many items does the machine produce in 6 hours? => 40 or 38 or 32 or 36..

The value of a machine decreases by 13% every year. Brian bought the machine yesterday for $30,000. What will be its value next year? => $25,100 or $26,120 or $26,100 or $27,100..

A machine can produce 28 bars of soap in one hour. How many soaps does the machine produce in 10 hours? => 280+10 or 280 or 280-10 or 280-20..

The rate of change of the maintenance charges per every half-year of a machine is shown. Find the total maintenance charges over the 6 year life of the machine. => 25000$ or 25700$ or 25550$ or 20583$..

A machine can make 1,200 rugs in 3 hours. Which graph shows the relationship between the number of rugs produced by the machine and the time taken? => Graph 2 or Graph 3 or Graph 1 or Graph 4..

A machine produces bolts, of which 10% are defective. Find the probability that in a random sample of 400 bolts produced by the machine, between 35 and 45 will be defective. Assume a standard deviation of 6. => 0.5640 or 0.6405 or 0.4605 or 0.4560..