a carpenter needs 6 pieces of wood that are 3 1/2 feet long. He has two 10 ft boards. Does he have enough wood.
I am not giving him the answer but need to know how to come to the answer so I can explain it to him.
Thanks for any help
2007-11-04 12:41:06 · 8 answers · asked by delamater2001 1 in Education & Reference ➔ Homework Help
From one board he can cut 2 pieces
31/2 dived into 10 equals2,8
Therefore he can only cut 2 pieces form one 10ft board
from 2 boards he will4 pieces.
He does not have enough wood.
hope this helps
2007-11-04 12:52:57 · answer #1 · answered by java 4 · 0⤊ 0⤋
There are multiple approaches you can take to solving this problem, but in my opinion the easiest way to explain it to your son is to first add 10+10 to figure out the total amount of wood that you have with the two boards. Then divide that answer (20) by the number of pieces you want (6). After doing this, you get 3.33. This means that if you were to cut 6 pieces from the two boards each one would be 3.33 feet long. As a result the answer is NO, you do not have enough wood because 3.33 feet/board is less than the 3.5 feet/board that you are looking for. Hope this helps you in your explanation to your son!
2007-11-04 12:49:32 · answer #2 · answered by Tom 3 · 0⤊ 0⤋
First times 6 by 3 1/2 and it equals 21. then do 10 times 2 and thats 20 so, the carpenter doesnt have enough
2007-11-04 12:49:49 · answer #3 · answered by Anonymous · 0⤊ 0⤋
No. If the boards were 10 1/2 feet he could get three out of each one. But he can only cut 2 out of each board then left with a 3 foot section useless to him. So he would only have 4 of the 3 1/2feet pieces.
2007-11-04 12:45:04 · answer #4 · answered by JuanB 7 · 0⤊ 0⤋
no
two boards at 3.5' are 7 foot. leaving 3' excess in each plank with 6' of excess wood for the two planks. there would be four 3.5' boards and 6' scrap. if you could join the two sections of scrap you would have one 3.5' piece and one 2.5' piece of scrap.
there are two ways to figure out. the way i did is to take the length of the new plank and divide it by the length of the finished piece of wood. the other is to take the total length of the two planks and do the same. you will wind up with one composit plank that way.
2007-11-04 12:52:32 · answer #5 · answered by tom5251972 4 · 0⤊ 0⤋
Okay. Ask him to use his ruler to mark out a ten inch line.
Now mark out 3.5 inches along this line. How many does he get?
He can see, visually, just how many pieces of wood he can get from each board.
He can also work it out through mathematics.
Divide 10 by 3.5 to see how many boards can be cut from the plank. Then double that to see how many boards he would get from the two planks.
2007-11-04 12:51:30 · answer #6 · answered by old lady 7 · 0⤊ 0⤋
He needs 6 pieces that are 3.5ft each - so 3.5 * 6 = and that comes out to 21ft of board, and the man has only 20ft. So he does'nt have enough board.
2007-11-04 12:50:46 · answer #7 · answered by angel_w_horns2004 2 · 0⤊ 0⤋
so divide 10 by 3.5 (2.85)
take just the whole number part fothe answer (2)
mulitply by 2,, is it 6 or greater? (4)
2007-11-04 12:53:37 · answer #8 · answered by zootsuit68 2 · 0⤊ 0⤋