# Percentages Problems

#### Number of problems found: 733

• Car value
The car loses value 15% every year. Determine a time (in years) when its price will halve.
• Shots
Determine the percentage rate of keeper interventions if from 32 shots doesn't caught four shots.
• Arrange
Arrange the following in descending order: 0.32, 2on5, 27%, 1 on 3
• Finding the base
Find the unknown base of percent: 12.5 percent of what = 16?
• Events
Event P has probability of 0.84. What is the probability that the event P occurs in 3, 5, 7 try.
• Guess number
With what number should be divided number 9727 to be reduced by 70%?
• Doctors
The drug successfully treats 90% of cases. Calculate the probability that he will cure at least 18 patients out of 20?
• Sales off
After discounting 40% the goods cost 15 €. How much did the cost of the goods before the discount?
A radioactive material loses 10% of its mass each year. What proportion will be left there after n=6 years?
• Double percent
What is 40% of 80% of 11800?
• Unknown number x
5% from an unknown number equals the number 26. What is the unknown number?
• Sphere fall
How many percent fall volume of a sphere if diameter decreases 3×?
• What is
What is the annual percentage increase in the city when the population has tripled in 20 years?
• Reducing number
Reducing the an unknown number by 28.5% we get number 243.1. Determine unknown number.
• Earning 2
Rahul earns 5000 Rs, he saves 500 Rs . What's percentage of his earnings does he save? *
• Break time
Calculate how many percent of school time is spent on breaks. Calculate data for the whole week.
• Joshka
Joshka had € 15. Mama took him 15%. How many had left?
• travel agency
Small travel agency offers 5 different tours at honeymoon. What is the probability that the bride and groom choose the same tour (they choose independently)?
• A perineum
A perineum string is 10% shorter than its original string. The first string is 24, what is the 9th string or term?

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