Corona again

If the population on long island is 7.75 million and the coronavirus has affected 22,178. What percent of the population is affected. (looking for 1 in? If possible)

Correct answer:

p =  0.2862 %
r =  1:349

Step-by-step explanation:

$p=100\cdot {\displaystyle \frac{22178}{7.75\cdot 1e_6}}=0.2862\mathrm{\%}$

$r={\displaystyle \frac{1}{[7750000\mathrm{/}22178]}}={\displaystyle \frac{1}{349}}\approx 0.0029=1:349$

Try another example

Related math problems and questions:

• Utopia Island
  A probability of disease A on the island of Utopia is 40%. A probability of occurrence among the men of this island, which make up 60% of all the population (the rest are women), is 50%. What is the probability of occurrence of A disease among women on Ut
• Two doctors
  Doctor A will determine the correct diagnosis with a probability of 93% and doctor B with a probability of 79%. Calculate the probability of proper diagnosis if both doctors diagnose the patient.
• The manufacturer
  The manufacturer found that 3% of the plates produced had a malfunction. Of the compliant, 75% are first and 25% second. What is the probability of producing first and second class plates?
• The number 72
  The number 72 increase by 25%. By how much % will you have to reduce the number you created to get the number 72 again?
• Percentages and numbers
  How many percent is number 69 smaller than number 276?
• Say we
  Say we have 70 voting delegates and we need a 2/3 vote What would that number be? Also same as above but in this virtual world, it converts to percentages. What would the % number of positive votes be?
• Dices
  We will throw two dice. What is the probability that the ratio between numbers on first and second dice will be 1:2?
• Mixed with percentages
  Calculate 33 1/3% of 570.
• President
  The country has 5.11 million citizens which 2.12 million are voters. Turnout was 34.4%. President R. F. was elected from 20 candidates for president and won with 38% of votes. Calculate what percentage of the country's citizens voted R.F. as president of
• Probability - tickets
  What is the probability when you have 25 tickets in 5000 that you not wins the first (one) prize?
• Fish population
  The number of fish in a lake decreased by 10% during period of one year. Last year there were 500 fish in the lake. What is the fish population this year?
• Basketball
  Peter and Franta threw to the basket. Each had 20 attempts. Peter scored thirteen and twelve Franta. Give them success in percentage.
• Percent chaining
  Calculate 20% from 70% from 80 km
• Percent calculation
  Calculate 51% if 99% is 79.
• 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 where there are 30 participants?
• Percentages above 100%
  What is 122% of 185? What is the meaning of percentages above 100%?
• Shooters
  In army regiment are six shooters. The first shooter target hit with a probability of 49%, next with 75%, 41%, 20%, 34%, 63%. Calculate the probability of target hit when shooting all at once.