A few days ago

Anonymous

Help with a math word problem…just need some direction as to how to set up.?

Nico wishes to purchase mulch to cover his garden. The garden measures 7 7/8ft by 10 1/8ft. He wants the mulch to be 1/3ft deep. How much mulch should Nico order if he must order a whole number of cubic feet?

Top 5 Answers

A few days ago

Dean J

Favorite Answer

If I were to work this out I would do a simple volume calculation (multiply the three numbers together). To make it easier I’d probably make the first two number into top heavy fractions (for example 63/8 and 81/8). Then you can work out 59/8 (which is 7.875) and then 81/8 (which is 10.125). Then times these together and divide the answer by 3. You get 26.5, so he’d have to buy 27 Cubic Feet of Mulch.

That’s how I’d work it out anyway.

A few days ago

navy_bison

Volume = length x width x depth

volume = (7_7/8)(10_1/8)(1/3)

First change all fractions to improper fractions

V = (63/8)(81/8)(1/3)

V= 26.578125 cubic feet

so he must order 27 cubic feet of mulch

A few days ago

old lady

What you have to do is find how many cubic feet the space you have described will accommodate. To do that, multiply 7 7/8 feet by 10 1/8 feet by 1/3 feet. It’s easier to do if you convert all the fractions to irregular fractions. Then convert your answer to a regular fraction and round it up to the next highest whole number.

A few days ago

to cover the garden, the amount of mulch has to be the same as the volume of the garden.

V = width * length * height

V = 7 7/8ft * 10 1/8ft * 1/3ft

V = 1701/64 ft^3 or about 26.58ft^3

A few days ago

Bruce J

7.875 x 10.125 x .3333333

Round the answer up.

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