# Algebra - math word problems - page 213 of 214

#### Number of problems found: 4272

- Probability 30271

The probability of an adverse drug reaction is 2.1%. How many people need to be prescribed for one patient to experience side effects with a chance of 90%? - A report

Maricris can type a committee report in 5 hours. Jane helped Maricris, and together they finished the report in 3 hours. How long would it take Jane to complete the report she had worked on alone? - Coffee

In-stock are three kinds of branded coffee prices: I. Kind. .. .. .205 Kc/kg II. Kind. .. .. .274 Kc/kg III. Kind. .. .. 168 Kc/kg Mixing these three species in the ratio 8:5:6 create a mixture. What will be the price of 100 grams of this mixture? - Graphical 4680

Solve the system by the graphical method: x + y = 8 2x-y = 1 - Peroxide

How many ml should we pour 30% of peroxide (H2O2) into 100ml H2O to give a 20% solution? - Average age

The average age of all people at the celebration was equal to the number of people present. After the departure of one person who was 29 years old, the average age was again equal to the number present. How many people were original to celebrate? - Workers

Two workers, A and B, will be done work together for 15 days. They worked together for 13.5 days. Then A worker became ill, and worker B finished the job alone for 7.5 days. If every worker was working alone, how many days took the whole work for workers - Three drivers

Three drivers driving in the same direction found that they have the same amount of gasoline. The first is enough to go 6 km, 4 km, second and third 3km. Gasoline they divided, so all three just drove to the nearest petrol station. How many km away was a - Three workers

Three workers, A, B, and C, have to work on a specific task. Workers A and B completed the task in 14 days, B with C for 23 days, and A with C for 13 days. How long would it take to complete the task for everyone alone? How long would it take to complete - Cleaners

Milan would clean up the room for 2.5 hours, and Eric would take 10 hours. How long do they sweep the room together? - Substitution method

Solve a goniometric equation: sin^{4}θ - 1/cos² θ=cos² θ - 2 - Left handed

It is known that 25% of the population is left-handed. What is the probability that there is a maximum of three left-handers at a seminar with 30 participants? - Drinks

In a country, 65% of people drink coffee, 50% drink tea 25% drink both. What is the probability that a person chosen at random will drink neither tea nor coffee? - Double probability

The probability of success of the planned action is 60%. What is the probability that we will achieve success at least once if this action is repeated twice? - Squirrels

The squirrels discovered a bush with hazelnuts. The first squirrel plucked one nut, the second squirrel two nuts, and the third squirrel three nuts. Each new squirrel always tore one nut more than the previous squirrel. When they plucked all the nuts from - Alarm systems

What is the probability that at least one alarm system will signal the theft of a motor vehicle when the efficiency of the first system is 90% and of the independent second system 80%? - Vinegar

What percentage of vinegar do we get if we mix 1 dm³ of eight percent vinegar with 1.5 dm³ of six percent vinegar? - Birthday paradox

How large is the group of people so that the probability that two people have a birthday on the same day of the year is greater than 90%? - Three shooters

Three shooters shoot, each time, on the same target. The first hit the target with 0.7, the second with 0.8, and the third with 0.9 probability. What is the probability of hitting the target: a) just once b) at least once c) at least twice - Together 3491

One painter would paint the school in 15 days. Together with the second painter, they painted the school in 6 days. In how many days the second painter would have painted the school himself?

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