$MathMaster logo$

MathMaster

Home
general
find the number of liters of water needed to reduce 9 liters of lotion shave containing 50 alcohol to a lotion containing

Question

Find the number of liters of water needed to reduce 9 liters of lotion. shave containing 50% alcohol to a lotion containing 30% alcohol.

233

likes

1165 views

Answer to a math question Find the number of liters of water needed to reduce 9 liters of lotion. shave containing 50% alcohol to a lotion containing 30% alcohol.

$Expert avatar$

4.7

88 Answers

Solución: Sea x el número de litros de agua que se van a añadir. Por lo tanto, el volumen después de agregar agua es 9+x. La cantidad de alcohol se mantendría constante antes y añadiendo el agua. Por lo tanto, 0.5\izquierda(9\derecha)=0.3\izquierda(9+x\derecha) Resolviendo para x, 4,5=2,7+0,3x

0,3x=1,8

x=6 Respuesta: Se deben agregar 6 litros de agua para diluir una loción con 50% de alcohol hasta 30% de alcohol.

Frequently asked questions (FAQs)

Question: What is the limit as x approaches 2 of (3x^2 - 4x + 5)?

+

Question: What is the formula for calculating the standard deviation in a set of data?

+

Math question: Simplify the limit of ((2x+3)/(x^2-4x+3)) as x approaches 1.

+

New questions in Mathematics

A normally distributed population has a mean of 118 with a standard deviation of 18. What score separates the lowest 72% of the distribution from the rest of the scores?

What payment 7 months from now would be equivalent in value to a $3,300 payment due 23 months from now? The value of money is 2.7% simple interest. Round your answer to 2 decimal places. Show all work and how you arrive at the answer..

what is the annual rate on $525 at 0.046% per day for 3 months?

The durability of a tire of a certain brand is a Normal random variable with an average of 64,000 km and a standard deviation of 9,000 km. Assuming independence between tires, what is the probability that the 4 tires on a car will last more than 58,000 km?

show step by step simplification: (¬𝑑∨((¬b∧c)∨(b∧¬c)))∧((𝑎 ∧ 𝑏) ∨ (¬𝑎 ∧ ¬𝑏))∧(¬𝑐∨((¬𝑑∧𝑎)∨(𝑑∧¬𝑎)))

John he’s going to the carnival with his friends. He spends $25 on an admission ticket. He buys 10 games at X dollars each and two boxes of popcorn at Y dollars each. Write an expression to show the total cost of admission game, tickets and popcorn.

The two sides of the triangle are 12 cm and 5 cm, and the angle between the sides is 60°. Cover the area of the triangle!

1. A capital of $3,831 was lent, and it has produced interest of $840 from 05-12-2022 to 1-12-2023. At what annual simple interest rate was the capital lent?

Two particles of electrical charges Q1=3.8×10-⁶C and q,=4.4×10-⁶C are separated in vacuum by a distance of 4.0.10-⁸ m. Since K=9.0.10⁹ N.m²/C², the intensity of the interaction force between them, in newtons, is?

48 kg of 30% sulfuric acid in a mixture of 10% and 40% sulfuric acid arose. How many kilograms were each of the original solutions?

A 20,000 kg school bus is moving at 30 km per hour on a straight road. At that moment, it applies the brakes until it comes to a complete stop after 15 seconds. Calculate the acceleration and the force acting on the body.

What is the total amount due and the amount of interest on a 3-year loan of $1,000 at a simple interest rate of 12% per year?

If sin A=0.3 and cos A=0.6, determine the value of tan A.

9n + 7(-8 + 4k) use k=2 and n=3

12[4 + (8 + 7) + 5]

Mark is gluing a ribbon around the sides of a picture frame. The frame is 11 inches long and 7 includes wide. How much ribbon does Mark need?