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r-ruslan [8.4K]
3 years ago
11

Solve photo question. Mathematics. Please. Easy one. And last one.

Mathematics
2 answers:
Archy [21]3 years ago
5 0

Answer:

18 nickels and 35 dimes

Step-by-step explanation:

4.40

35 dimes

$3.50

4.40-3.50=0.9

0.9/ 0.05= 18 nickels

There would be 35 dimes and 18 nickels.

Elan Coil [88]3 years ago
4 0
A collection of nickels and dimes is worth $4.40. There are 53 coins in all. How many nickels are there?

Nickel is a US coin worth 5 cents or 0.05.
Dime is a US coin worth 10 cents or 0.10

n + d = 53
0.05n + 0.10d = 4.40

n = 53 - d
0.05(53 - d) + 0.10d = 4.40  
2.65 - 0.05d + 0.10d = 4.40
0.05d = 4.40 - 2.65
0.05d = 1.75
d = 1.75 / 0.05
d = 35

n = 53 - d
n = 53 - 35
n = 18 

There are 18 nickels and 35 dimes.

0.05n + 0.10d = 4.40
0.05(18) + 0.10(35) = 4.40
0.90 + 3.5 = 4.40
4.40 = 4.40
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