# Cows

20 cows has food for 60 days. We reduce the dose to two-thirds for 18 cows. How many days will be fed?

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

**Showing 0 comments:**

**Be the first to comment!**

#### To solve this example are needed these knowledge from mathematics:

## Next similar examples:

- Highway

Six trucks will be used to build the roadside 18 days. After 3 days, two more trucks were sent to build. How long will it take for material move? - Family 8

Father is 38 years old, daughter 12, son 14. How many years will father have as many years as his children together? - Book

To number pages of thick book was used 4201 digits. How many pages has this book? - How old

The student who asked how many years he answered: "After 10 years I will be twice as old than as I was four years ago. How old is student? - The classroom

In the seventh class the number of boys and girls are at a ratio of 4:5. Boys are 16. How many total students are in the classroom? - Quiz

Tested student answered correctly on a 4/ 8 questions. Wrong answers was 16. How many questions answered? - Points

Gryffindor won 437 points. How many points obtained by each of the faculties if they were split at a ratio of 7: 5: 3: 4? - Tickets 3

A total of 645 tickets were sold for the school play. They were either adult tickets or student tickets. There were 55 fewer student tickets sold than adult tickets. How many adult tickets were sold? - Forest nursery

In the forest nursery after winter, they found that 1/10 stems died out of them. For them, they land 193 new spruces. How many spruces are in the forest nursery? - Novak

Novak needed to dig up three of the same pit in the garden. The first pit dug father alone for 15 hours. His second dig son helped him and it did that in six hours. The third pit dug son himself. How long it took him? - Suzan

Susan's age will be after 12 years four times as much as twelve years ago. How old is Susan now? - Bread

5 of the same bread has the same weight as three bread and 4 kg of fruit. What weight has one bread? - Timeage

Seven times of my age is 8 less than the largest two-digit number. How old I am? - Sumo competition

In the competition for the heaviest man was 5 competitors. The first three together weighed 553 kg. What is the minimal weigt of winner, if a contestant weighed with an accuracy of one kilogram. - Bed time

Tiffany was 5 years old; her week night bedtime grew by ¼ hour each year. If, at age 18, her curfew time is 11pm, what was her bed time when she was 5 years old? - Unknown number 11

That number increased by three equals three times itself? - Simple equation

Solve for x: 3(x + 2) = x - 18