Basic functions - math problems
Number of problems found: 2552
- Salt solution
Calculate the weight of a 50% salt solution that we prepare from 120 g of salt.
- 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?
- When 5
When 5 is subtracted from both my numerator and denominator I become 3/4. What fraction i am?
If you were charged $243 in taxes on a $4,050 purchase, what percent tax were you charged?
- Sale goods
Sale goods were reduced twice. First by 15% and then by another 20% of the new price. What percentage of the original price was the final price?
- Multiplicative inverse
Explain why the reciprocal of - 1 1/17 is the multiplicative inverse of - 17/18.
- Insurance 2
A house that is valued at 255,000 euros has been insured for 224,000 euro. At what percent has it been insured?
- A frequency
A frequency table of grades has five classes (A, B, C, D, F) with frequencies of and 2,14,13,8 and 1 respectively. Using percentages, what are the relative frequencies of the five classes?
- Regular price
The sale price of a television set is 7200. The discount rate is 40%. Find its regular price.
- The average 4
The average cost price of a car in Ireland is now €26,430 excluding VAT. If VAT is 23% calculate the actual selling price of a car in 2021.
- Railways 3
Railway Corporation wants to purchase a new machine for $360,000. Management predicts that the machine can produce sales of $220,000 each year for the next 5 years. Expenses are expected to include direct materials, direct labor, and factory overhead (exc
- Conjugate equation
Find the numbers of a and b, if (a - bi) (3 + 5i) is the Conjugate of (-6 - 24i)
- A perimeter
A perimeter of a parallelogram is 2.8 meters. The length of one of its sides is equal to one-seventh of the entire perimeter. Find lengths of the sides of the parallelogram.
- An aircraft
An aircraft manufacturing company has submitted bids on two separate airline contracts, A and B. The company feels that it has a 70% chance of winning contract A and a 25% chance of winning contract B. Furthermore, it believes that winning contract A is i
- The ratio 4
The ratio of two number is 5:4 if 40% of the first number is 12, what will be 50% of the second number?
- Sort fractions
Which is larger 3/7, 3/8, 3/9, 3/6 =
- Clothes 4
If the cost of 16.5 metres of cloth is ₹2,062.50 then find the cost of 24.75 metres of clothes
- Cost structure
You are currently trying to decide between two cost structures for your business: one that has a greater proportion of short-term fixed costs and another that is more heavily weighted to variable costs. Estimated revenue and cost data for each alternative
- 76% is
76% is between which of the following two numbers. 1) 1/5 & 1/4. 2) 1/3 & 1/2 3) 2/3 & 7/10 4) 3/4 & 5/6
If a keg of nails costs $129.45 and 6/7 of the keg is used, what is the value of the remaining nails?