if 2 1/3 feet of silver ribbon cost $.14 how much will 9 feet cost
3 answers
if 2 1/3 feet of silver ribbon cost $.14 how much will 9 feet cost
2 1/3 = 2 + 1 / 3 = 6 / 3 + 1 / 3 = 7 / 3
9 / ( 7 / 3 ) = 9 ∙ 3 / 7 = 27 / 7
$14 ∙ 27 / 7 = $378 / 7 = $54
OR
x = cost of 9 feet ribbon
( 2 1/3 ) / 14 = 9 / x
( 7 / 3 ) / 14 = 9 / x
7 / ( 14 ∙ 3 ) = 9 / x
7 / 42 = 9 / x
Cross multiply.
7 x = 378
x = 378 / 7
x = 54
9 feet ribbon will cost $54.
9 / ( 7 / 3 ) = 9 ∙ 3 / 7 = 27 / 7
$14 ∙ 27 / 7 = $378 / 7 = $54
OR
x = cost of 9 feet ribbon
( 2 1/3 ) / 14 = 9 / x
( 7 / 3 ) / 14 = 9 / x
7 / ( 14 ∙ 3 ) = 9 / x
7 / 42 = 9 / x
Cross multiply.
7 x = 378
x = 378 / 7
x = 54
9 feet ribbon will cost $54.
surely you can tell that $54 is a totally unreasonable answer.
Always do a sanity check before that final submission.
Always do a sanity check before that final submission.