yshumats yshumats

07-02-2021
Mathematics

contestada

Kate has some dimes and quarters. If she has 23 coins worth a total of $3.50, how many of each type of coin does she have?

Respuesta :

07-02-2021

23=d+q, d=23-q

350=10d+25q, using d from above

350=10(23-q)+25q

350=230-10q+25q

120=15q

q=120/15

q=8, and since d=23-q

d=23-8=15

So there are 15 dimes and 8 quarters

Answer Link

Otras preguntas

How can you check the reasonableness of your solution

The parts of the Earth near the equator receive more sunlight than the north or south poles. How does this impact the climate at the equator?

Which common material is an example of a polyamide?

Is there a x=-2 in these equations

Ben walks 500 meters from his house to the corner store. He then walks back toward his house, but continues 200 meters past his house to talk to a neighbor. It

Please help me writing

What art movement does color-field painting belong to

On tuesday shanice bought five hats. on wednesday half of all the hats that she had were destroyed. equation for... on thursday there were only 17 left. how ma

Please help me with this, thanks.

Caroline bought 20 shares of stock at 10 1/2, and after 10 months the value of the stocks was 11 1/4. If Caroline were to sell all her shares of this stock, how