indiariek indiariek
  • 25-07-2017
  • Mathematics
contestada

Betty has 10 more dimes than quarters. If she has $3.45, how many coins does she have?

Respuesta :

musiclover10045
musiclover10045 musiclover10045
  • 25-07-2017

d = dimes

q = quarters

d=10+q

0.25q +0.10d = 3.45

0.25q + 0.10(10+q) = 3.45

0.25q + 1 +0.10q =3.45

0.35q=2.45

q = 2.45/0.35 = 7

d = 10+7 =17

0.25*7=1.75, 17*0.10 = 1.70, 1.75+1.70 = 3.45

she has 7 quarters and 17 dimes for a total of 24 coins

Answer Link

Otras preguntas

Change the radians to degrees
There are 384 nails in a 16-ounce jar. How many nails are there per ounce in the jar?
What geological land feature divides Europe from Asia? Great Wall of China Baltic Sea Iberian peninsula Ural Mountains
suppose you could choose 2 boxes of markers. Find all the possible pairs.
Why did the United States play a MAJOR role in rebuilding Japan after World War II
What is the biggest mountain?
What form of heat transfer is occurring as a toaster coil begins to glow? a. radiation b. convection c. conduction d. thermal equilibrium
how can chromatography be used to identify compounds
who were the cunningham boys and what happened to them whats the irony here
In the diagram, which is demonstrated by arrow 1? A. liquid water evaporating from the surface to the atmosphere B. water vapor condensing into liqu