katieparshall katieparshall

11-11-2017
Mathematics

contestada

A chemist has one solution that is 60%alcohol and another that is 35%alcohol how much of each must she use to make 15 liters of a solution that is 50%alcohol

Respuesta :

jorel1380 jorel1380

11-11-2017

Let n be the amount of 60% solution; 15-n be the amount of 35%. Then:
.6n+.35(15-n)=.5(15)
.25n+5.25=7.5
n=9
15-n=6
9 liters of 60% solution;6 liters of 35% solution
☺☺☺☺

Answer Link

kjfrost14 kjfrost14

11-11-2017

6 liters of 35% solution i think

Answer Link

Otras preguntas

Which word in the sentence does the participial phrase modify? Pausing for effect now and then, Nicole read the best parts aloud. A. aloud B. parts C. read D. N

The protist seen here is called euglena. It is both animal-like and plant-like. It eats food but it also has chloroplasts like a plant cell, in order to make fo

axis of symmetry for f(x) = -2x2 + 20x -42

Which sentence does not contain any errors in comma usage? A. At a park, or, in a mall, my parents are usually nearby. B. At a park or in a mall my parents are

Which is the best correction of the sentence fragment? Was careful to avoid driving during rush hour. A. My brother was careful. To avoid driving during rush ho

A cell phone costs $210,a battery recharger costs $15, and batteries cost $5. What is the sales tax total price for purchasing these items if the sales tax rate

Which sentence uses commas correctly? A. My cousin, marched, in a parade, through the streets of Rome, Italy. B. My cousin marched in a parade, through the stre

Which Soviet leader promoted the policies of glasnost and perestroika in an effort to save the Soviet economy? A. Boris Yeltsin B. Vladimir Putin C. Mikhail Gor

WHAT IS 18 TONS 42 POUNDS DEVIDED BY 3

what did the twelve tables say about the execution of a person who had not yet been convicted