adith08 adith08

22-10-2020
Mathematics

contestada

Martha has some nickels and dimes worth $6.25. She has three times as many nickels as dimes. How many nickels does she have?

Respuesta :

nicole32406 nicole32406

22-10-2020

Answer:

75 nickels.

Step-by-step explanation:

Here is the system of equations you can use:

0.05n+0.1d=6.25 (which can be converted to 5n+10d=625)

3d=n

5(3d)+10d=625

15d+10d=625

25d=625

d=25

3(25)=n

n=75

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