dmahaney8538
06.07.2019 •
Mathematics
Jeff has $,4.05 made up of nickles and dimes. if he has seven times as many nickles as dimes, how many dimes does he have?
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Ответ:
Given
jeff has $,4.05 made up of nickles and dimes
he has seven times as many nickles as dimes
Find out the dimes does he have.
To proof
Let us assume that the number of dimes = x
number of nickel = 7x
$,4.05 made up of nickles and dimes.
1 dimes = 0.10$
1 nickel = 0.05$
Than the equation is become in the form
0.10 x + 0.05 ( 7x) = 4.05
0.10x+ 0.35x = 4.05
0.45x = 4.05
x = 9
the number of dimes = 9
number of nickel = 7× 9
= 63
Hence proved
Ответ:
I hope this helps! Can I have Brainliest, please? :)