how many kg of pure salt must be added to 30 kg of 2% solution of salt and water to increase it to a 10% solution please explain me details
how many kg of pure salt must be added to 30 kg of 2% solution of salt and water to increase it to a 10% solution please explain me details
in an examination 35% of total students failed in hindi, 45% failed in english and 20% in both find the percentage of those who passed in both the subjects
fred store stocks brands of soap: dials and suave. dial $0.85 a bar and suave $0.60 a bar. fred sold 70 bars of soap. he sold $50 of soap. How much of each type of soap was sold?
A triangular shaped goat pen has a perimeter of 15 feet. Two of the sides are equal in length. They are each twice as long as the shortest side. How long is each of the sides of the goat pen?
A triangle has three angles. One is labeled x, one is labeled y, and one measures 84 degrees. Angle y is three times as large as angle x. What is the measures of angles x and y?
due to reduction of 25/4% in the price of sugar a man is able to buy 1 kg more for Rs 120 find the original and reduced rate of sugar please explain me detail
Christina owns a few fruit trees in her backyard and sells the fruit when it's ready. If her peach tree produces "p" pounds of fruit a day at a cost of f(p), what do the following expressions...
Alice thought of a number, she multiplied the number by 3, then added 12. This result she divided by 3. Finally she subtracted 7. If her result was 6, what number was Alice thinking of?
ms morales wrote a test with 15 questions covering speling and vocabulary spelling questions x are worth 5 points and vocabulary questions y are worth 10 point the max number of points possible on...
rema is older than ken. The difference of their ages is 12 and the sum of their ages is 50. Find the age of each.
Jon leaves his house at 45 miles per hour. a half hour later, his wife Emily leaves at 55 miles per hour. how long does it take to meet
How do I figure this problem out? What is the format? And how much Money will I spend in gas
a 350 seat movie theater charges $10.50 admission for adults and $7.50 for children. if theater is full and $3411 is collected, how many adults and how many children are in the audience?
The longest side of a triangle is 2 times the shortest side. If the third side is 5 more than the shortest side, and the perimeter is 65cm, find the measures of the three sides of the triangle.
Suppose the cost of producing x widgets is C(x)=5000+40x−0.02x^2 A. What is the cost of producing widget number 31? Your answer should be a single number. (Recall that C(x)...
Wilma drove at an average speed of 55 mi/h from her home in City A to visit her sister in City B. She stayed in City B 25 hours, and on the trip back averaged 45 mi/h. She returned home 49 hours after...
2 trains 200 km apart move toward each other at 50 km/hr each wasp takes off from one train flying st towards other at 75 km/hr wasp collides with first train and bounces off and flies back...
There was a 100 meter race between a hare and a tortoise. The hare can run 20 meters in 5 seconds and the tortoise can run 2 meters in 5 seconds. Thinking she will win, the hare stops for a snack...
Modeling quadratic functions. Zeroes are -.92 and 3.42.
If 13 is added to a number and the sum is multiplied by 3, the result is 7 times the number decrease by 9. Find the number.