The value of 110 coins, consisting of dimes and quarters, is $20.30. how many of each kind of coin are there?

Question

01-10-2017
Mathematics

contestada

The value of 110 coins, consisting of dimes and quarters, is $20.30. how many of each kind of coin are there?

Respuesta :

Otras preguntas

A person gets on a Ferris wheel at the starting point. The starting point is 15 feet off the ground. The Ferris wheel has a radius of 50 feet. What is the heigh

Describe the net of a square pyramid

The force of the blood on the walls of blood vessels is called

in a long jump competetion wendy jumped 9/10 meters and judy jumped 10/9 meters. draw a number line to model the distance of each girls long jump. Who jumped th

genetic variation is an advantage in a changing environment which form of reproduction enables organisms to produce varied offspring?

What element of a persuasive essay is best described as the authors main argument

Even though appropriate training is given to clinicians and patients, the use of e-mail will never reduce physician and patient risk. a. True b. False

please answer the question

The region of Mexico with the largest population is located _____. A. in the mountains b. along the Atlantic coast C. close to the United States D. on an elevat

texaschic101 texaschic101 · Answer 1 · 2017-10-01T07:34:47+02:00

texaschic101 texaschic101

01-10-2017

d + q = 110......d = 110 - q
0.10d + 0.25q = 20.30

0.10(110 - q) + 0.25q = 20.30
11 - 0.10q + 0.25q = 20.30
-0.10q + 0.25q = 20.30 - 11
0.15q = 9.30
q = 9.30/0.15
q = 62 <==== there are 62 quarters

d = 110 - q
d = 110 - 62
d = 48 <==== there are 48 dimes

Answer Link