Carly101Kaylob Carly101Kaylob

26-06-2016
Mathematics

contestada

A person has 20 coins, all nickels and dimes, worth one dollar and 40 cents. How many nickels are there?

If n = number of nickels and d = number of dimes, which system of equations represents the problem?

Respuesta :

satellite73 satellite73

26-06-2016

is there one that looks like
\[n+d=20\\
5n+10d=140\]

Answer Link

sadisticrobot sadisticrobot

10-03-2019

Answer:

The answer is

n + d= 20 and 5n + 10d= 140

Step-by-step explanation:

Answer Link

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