Would you recommend buying guitars used?

best acoustic guitar for 700 pounds image

Sam

Both electric and acoustic

Answer
Sure, just be VERY wary of defects, and worst of all, fake instruments. If anything, buy used from a shop, not privately. My friend ended up paying 700 pounds for a so-called Fender, turned out to be a re-stickered Squier.

Just look out, you will be fine :)

Math word problems, please help?

Runner16

1. In one week a music store sold 9 guitars for a total of $3611. Electric guitars sold for $479 each and acoustic guitars sold for $339 each. How many of each type of guitar were sold??

2. A nut wholesaler sells a mix of peanuts and cashews. The wholesaler charges $2.80 per pound for peanuts and $5.30 per pound of cashews. The mix is to sell for $3.30 per pound. How many pounds of peanuts and how many pounds of cashews should be used to make 100 pounds of the mix??


Thank you very much!! The first answer to get it right and solve by each step gets BEST ANSWER!!!

Answer
1. In one week a music store sold 9 guitars for a total of $3611. Electric guitars sold for $479 each and acoustic guitars sold for $339 each. How many of each type of guitar were sold??

HINT: Write what you know in a table.

Type â¦â¦......â¦â¦. Qty â¦â¦. Worth â¦â¦. Total
electric guitars â¦... e â¦â¦â¦. 479 â¦â¦.... e * 479 = 479e
acoustic guitars â¦. a â¦â¦â¦. 339 â¦â¦â¦ a * 339 = 339a
Total â¦â¦â¦â¦........ 9 â¦â¦..... ----- â¦â¦â¦ 3611

The first 2 rows of the first column always add up to the third row in that column.
e + a = 9

The first 2 rows of the last column always add up to the third row in that column.
479e + 339a = 3611

You now have 2 equations.
479e + 339a = 3611
e + a = 9

Solve the 2nd one for e.
e + a = 9
e = 9 - a

Replace e with 9 - a in the 1st one.
479e + 339a = 3611
479(9 - a) + 339a = 3611
4311 - 479a + 339a = 3611
-140a = -700
a = 5

Plug this solved a value into e = 9 - a to solve for e.
e = 9 - a
e = 9 - 5
e = 4

ANSWER: There were 5 acoustic guitars and 4 electric guitars sold.

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2. A nut wholesaler sells a mix of peanuts and cashews. The wholesaler charges $2.80 per pound for peanuts and $5.30 per pound of cashews. The mix is to sell for $3.30 per pound. How many pounds of peanuts and how many pounds of cashews should be used to make 100 pounds of the mix??

HINT: Write what you know in a table.

Type â¦â¦â¦â¦. Qty â¦â¦.. Cost/lb â¦â¦.. Total
peanuts â¦â¦â¦. p â¦â¦â¦. 2.8 â¦â¦â¦â¦. p * 2.8 = 2.8p
cashews â¦â¦... c â¦â¦â¦.. 5.3 â¦â¦â¦â¦. c * 5.3 = 5.3c
Total â¦â¦â¦â¦.. 100 â¦.⦠3.3 â¦â¦â¦â¦ (p + c) * 3.3 = 3.3(p + c)

The first 2 rows of the first column always add up to the third row in that column.
p + c = 100

The first 2 rows of the last column always add up to the third row in that column.
2.8p + 5.3c = 3.3(p + c)

Replace (p + c) with 100 and simplify.
2.8p + 5.3c = 3.3(p + c)
2.8p + 5.3c = 3.3(100)
2.8p + 5.3c = 330

You now have 2 equations.
2.8p + 5.3c = 330
p + c = 100

Solve the 2nd one for y.
p + c = 100
c = 100 - p

Replace y with 100 - p in the 1st one.
2.8p + 5.3c = 330
2.8p + 5.3(100 - p) = 330
2.8p + 530 - 5.3p = 330
2.8p - 5.3p = 330 - 530
-2.5p = -200
p = -200 / -2.5
p = 80

Substitute p with 80 in c = 100 - p to find c.
c = 100 - p
c = 100 - 80
c = 20

You need 80 pounds of the peanuts and 20 pounds of the cashews to make a 100-pound mixture worth $3.30 per pound.

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