# Classmates

Roman is ranked 12th highest and eleventh lowest pupil. How many classmates does Roman have?

Result

x =  21

#### Solution:

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Be the first to comment!

## Next similar examples:

1. Chocolate
Randy bought 6 same chocolates for 6 Eur. How many euros will he pay for 25 chocolates?
2. Workers
Three factory operators produced 480 units in 50 minutes. How many hours worked? I'm trying to prove or disapprove the idea that the company tell me that it's 2.5 hours. So what is right? Thank you, Petra
3. The average
The average of one set of 4 numbers is 35. The average of another set of number is 20. The average of the numbers in the two sets is 30. How many numbers are there in the other set?
4. Cyclist
A cyclist passes 88 km in 4 hours. How many kilometers he pass in 8 hours?
5. Chickens
2 chickens give 2 eggs in 2 days. How many eggs can give 8 chickens for 8 days?
6. Homeless Dezider
Homeless Dežko has 9 coins in jacket: Calculate the value of its assets and calculate how many bottles of wine for 0.55 EUR can he buy.
7. Textbooks
After check of textbooks found that every 10-th textbook should be withdrawn. Together 58 textbooks were withdrawn. How many textbooks were in stock before withdrawn and how many after withdrawn?
8. Subtraction
How many times you can subtract the number 4 from the number 50?
Add two mixed fractions: 2 4/6 + 1 3/6
Add this two mixed numbers: 1 5/6 + 2 2/11=
11. Discount sale
After the discount, the computer costs 9600, - CZK. How much did it cost when the price was reduced: a) by half b) by a third c) by one fifth and then by 160 CZK
12. Brick
One brick is 6 kg and half a brick heavy. What is the weight of one brick?
13. Three cats
If three cats eat three mice in three minutes, after which time 140 cats eat 140 mice?
14. Divisibility
Is the number 761082 exactly divisible by 9? (the result is the integer and/or remainder is zero)
15. Monkey
Monkey fell in 38 m deep well. Every day her scramble 3 meters, at night dropped back by 2 m. On that day it gets hangover from the well?
16. Medicament
Same type of medicament produces a number of manufacturers in a variety of packages with different content of active substance. Pack 1: includes 60 pills of 600 mg of active substance per pack cost 9 Eur. Pack 2: includes 150 pills of 500 mg of active sub
17. Tereza
The cube has area of base 225 mm2. Calculate the edge length, volume and area of its surface.