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
