Subtracting - examples
- Bitoo and Reena
Bitoo ate 3/5 part of an apple and the remaining part was eaten by his sister Reena. How much part of an apple did Renna eat? Who had the larger share? By how much?
A federal law requires that all residential toilets sold in the United States use no more than 1 3/5 gallons of water per flush. Prior to this legislation, conventional toilets used 3 2/5 gallons of water per flush. Find the amount of water saved in one ye
- The coil
How many ropes (the diameter 8 mm) fit on the coil (threads are wrapped close together) The coil has dimension: the inner diameter 400mm, the outside diameter 800mm and the length of the coil is 470mm
- MW oven
You plug a microwave oven into a 20 amp electrical circuit. the microwave uses as much as 12.5 amps . How many amps are available on this circuit for other appliances?
The root of the equation ? is: ?
- Bus vs. train
Bus started from point A 25 minutes before the train started from the same place. The bus went an average speed of 41 km/h, train 67 km/h. To point B train and bus arrived simultaneously. Calculate time of train journey, if train and bus travelled the.
- Short cut
Imagine that you are going to the friend. That path has a length 330 meters. Then turn doprava and go another 840 meters and you are at a friend's. The question is how much the journey will be shorter if you go direct across the field?
After check of textbooks found that every 8-th textbook should be withdrawn. Together 74 textbooks were withdrawn. How many textbooks were in stock before withdrawn and how many after withdrawn?
- It is rectangular?
Size of two of the angles in a triangle are: α=60°, β=20°. Is it a right triangle?
How many times you can subtract the number 2 from the number 39?
The theater has in each row with 11 seats. Ticket to the first 8 rows is for 198 KČ. In next rows is for 84 KČ. The theater was completely sold out. Revenue was 34980 KČ. How many rows are in the theater?
Pediatrician this month of 21 working days takes 3 days holidays. What is the probability that on Monday will be at work?
A man bought a pig for € 55 then sold it for € 65. Then again bought for € 75 and sold it for € 85. How many € earned?
I have 12 balls and my friend has 18. About how many has my friend more balls?
- I think number
I think number.When I add 544 to it and subtract 194, I get a number that is 45 greater than 1207. What number I thinking?
Table of chocolate is divided into squares on its surface. Lengthwise has 15 squares and widthwise 7 squares. We must chocolate broke into individual squares. How many times we have broke it to get only individual squares? It is not permitted to break.
- Unknown x
If we add to unknown number 72, then divide by 2 and then subtract 29, we get back an unknown number. What is this unknown number?
10 hens will eat spilled grain from 6AM to 16 PM. At 9 hour grandmother brought 5 hens from the neighbors. At what time was grain out?
- Efficiency of rail
With subsidies are business easy. Calculate how much must cost rail ticket (x) in today's ticket price € 13 and if the trains was not subsidized, if it is known that without subsidies would cost three times today's ticket prices. Calculate the value of.
Nicol mistake when calculate in school. Instead of add number 34 subtract it. What is the difference between the result and the right result?