Algebra - math word problems - page 203 of 205
Number of problems found: 4096
- Working together
One worker performs work in 3 days, the second in 5 days. How much do they work together?
- Together 28411
Worker A will dig a trench in 12 days. Worker B will dig a trench in 18 days. How many days will it take them together?
First painter painted fence himself for 4 hours, the second painter 1.2 hours sooner than first, and the third painters slowest up to 16 hours. How long took them paint fence if worked together?
- The escalator
I run up the escalator at a constant speed in the stairs' direction and write down the number of steps A we climbed. Then we turn around and run it at the same constant speed in the opposite direction and write down the number of steps B that I climbed. I
- Three robots
In a workshop, three robots, Q, R and S, are employed to make chairs Robot Q makes 25% of the chairs Robot R makes 45% of the chairs The remaining chairs are made by Robot S Evidence has shown that 2 percent of the chairs made by robot Q are d
- Students and exam
In a certain college accounting is one of the courses, among the accounting students 60% are male among the male students 75% passed in the exams while among the female 50% failed. (a) present this using a probability tree diagram (b) determine probabilit
- Oil tank and pipes
The underground oil tank can be filled by two oil pipelines. The first is filled in 72 hours and the second in 48 hours. How many hours from the moment when first pipeline began to fill the oil is it necessary to start filling it with the second to fill i
- Kilogram 3024
One kilogram of raisins costs a crown and one kilogram of nuts a crown. They added 5 kg of raisins and 3 kg nuts to the mixture. How much does 1 kg of mixture cost?
Determine the smallest integer p for which the equation 4 sin x = p has no solution.
- Two cities
The car goes from city A to city B at an average speed of 70 km/h, back at an average speed of 50 km/h. If it goes to B and back at an average speed of 60 km/h, the whole ride will take 8 minutes less. What is the distance between cities A and B?
- The vaccination
The vaccination coverage of the population is 80%. Unvaccinated make up 60% of all infected. What percentage are unvaccinated more likely to be infected? Consider N = 10,000 inhabitants and K = 1,000 infected. b. How many times more likely are unvaccinate
- Forth and back
Car drive from point A to point B at speed 78 km/h and back at 82 km/h. If went there and back at speed 81 km/h journey would take five minutes less. What is the distance between points A and B?
Find the intersections of the function plot with coordinate axes: f (x): y = x + 3/5
- Together 4511
One tractor would sow the field in 3 hours and the other in 7 hours. How long before the fields grow together?
It is estimated that 10% of all federal prisoners have a positive self-image, 40% have a neutral self-image, and the rest have a negative self-image. The estimated probability of rehabilitating a prisoner with a negative self-image is 0.1. With a neutral
- Kilometers 7631
At 8:00, Peter set out on a hike at 5 km / h. At 9:12, Michal followed him on a bike at a speed of 20 km / h. At what time did Michal Petra run, and how many kilometers did he cover?
In how many points will intersect 14 different lines, where no two are parallel?
- Probability 68594
What is the probability that any two-digit number a) is divisible by five, b) is not divisible by five?
The pharmacist had a 12 l vessel herbal lotion, which contained a 30% active ingredient. Her assistant poured 18 liters of herbal lotion containing 45% of the active ingredient into a container. What percentage of herbal lotion was produced?
The first harvester will harvest the grain from the field in 20 hours, the second, the more powerful in 10 hours. How long will it take to harvest this field by both harvesters if the second harvester has to be set up first and this takes 2 hours? The fir