01-04-2015
Mathematics

Answered

If 2 over 7 of a ton of concrete covers 7 over 8 of a wall, how many tons of concrete are required to cover the entire wall?

Answer :

01-04-2015

Set up a proportion:

2/7/7/8 = x/1

Multiply 1 to both sides:

(2/7 * 1)/(7/8) = x

(2/7)/(7/8) = x

Flip the 2nd fraction and multiply:

2/7 * 8/7

Multiply the numerators and denominators together:

16/49

So 16/49 tons of concrete are required to cover the entire wall.

Answer Link

Other Questions

what are two social reasons for imperialism

Early encounters between American Indians and European colonists led to a variety of relationships among the different cultures Analyze how the actions taken by

what is the longest river in Europe

whats the difference between word form and standard form and expanded form

In which compound is the percent by mass of oxygen greatest A BeO B MgO C CaO D SrO

nelson got a pack of 12 pencils he took 3 pencils to pit in his desk at school and 2 pencils to put in his locker at school what is the fraction of total pencil

The location of a post office is marked at 22 on a coordinate grid Which point is about 18 units from the location of the post office L129 M129 N129 P129

why did Spain continue to sponsor voyages of exploration

Iron in the form of fine wire burns in oxygen to form iron III oxide Write the balanced chemical equation

list the ways in which tadpoles immature frogs and frogs differ from each other