Double ratio

The mobile phone was twice gradually discounted in the ratio of 3: 2 1 half: 5 quarters. How much did it originally cost if the price was CZK 4,200 after a double discount?

Correct answer:

a =  10080

Step-by-step explanation:

c=4200 a:b:c=3:(2+1/2):(5/4)  b:c=(2+1/2):(5/4)  b=(2+1/2)/(5/4) c=(2+1/2)/(5/4) 4200=8400  a:b=3:(2+1/2) a=3/(2+1/2) b=3/(2+1/2) 8400=10080   Verifying Solution:  a1=3/(5/4) c=3/(5/4) 4200=10080

Did you find an error or inaccuracy? Feel free to write us. Thank you!


Tips to related online calculators
Need help to calculate sum, simplify or multiply fractions? Try our fraction calculator.
Check out our ratio calculator.
Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions:

  • Two discounts
    mince The MP4 player cost 960 CZK, the price was twice gradually reduced in the ratio 4: 3: 3/2. How much did the player cost after the second discount?
  • Discount
    phone The new phone was discounted by 2800kč. After this discount, 5 phones cost 5530 CZK, more than 3 phones before the discount. How much did the phone cost before the discount?
  • Discount
    saty The dress was discounted by CZK 115, which was 12% of the original price. What is the cost of the dress after the discount?
  • Discount sale
    penize After the discount, the computer costs 9600, - CZK. How much did it cost when the price was reduced: a) by half b) by a third c) by one fifth and then by 160 CZK
  • Cost reduction
    mp3 Two MP3 players whose price was equal to originally have been discounted the first by 20%, the second by 35%. After the price reduction was the difference in their prices 750, - CZK. What was the original price of each of the two players?
  • Discount price
    sveter Coat cost 150 euros after sales discount. What is the original price when the discount is 25% of the original price?
  • Twelve ties
    kravata The price of 12 ties before the discount was the same as 15 ties after discount. Calculate the price of 1 tie after discount, if you know that the discount price of one tie fell by 40 CZK?
  • Discount and prices
    sale After a 29% discount, the new product price was € 426. What was the original price of the product?
  • Motel
    motorest Three different dinners A, B, C are served in the motel. Three 20 members went to motel. Group 1 ordered dinners: A 20 members and their average dinner price in the group was CZK 200. From Group 2, they ordered a A: 10 persons, B 10 dinners, and their ave
  • Washing machine
    washing_masine The price of washing machine was decreased by 21% and then by 55 € due small sales. After two price decreases cost € 343. How much was originally cost?
  • Candies
    oriesky In the confectionery, the price for 1 kg of pistachio candies cost CZK 360, and the price for 1 kg of hazelnut candies was CZK 280. Mixing these two types of sweets created a box of chocolates. How many grams of pistachios and how many grams of hazelnut c
  • The blue
    sveter The blue and red coats originally cost the same. Then red prices rose by 27% and blue prices fell by 87%. Then their price differed by CZK 300. How much did the originally blue coat cost?
  • Five numbers in ratio
    arithmet_seq Five integers are in the ratio 1: 2: 3: 4: 5. Their arithmetic mean is 12. Determine the smallest of these numbers.
  • Chocolate
    percent Chocolate, which originally cost 1.5 euros, was increased by 40%. How many euros did it cost?
  • Two wine
    wines In 2:1 mix wine solution cost 4.1 USD. In 1:2 mix wine solution cost 4.5 USD. How much cost liter of each wine?
  • Class 9.C
    skola Professor collects money in the 9. C for a school trip. 2/3 of the collected amount was from girls and 1/4 from boys. The rest of 410 CZK went from the class fund. How much will the school trip cost in total?
  • Store
    pave One meter of the textile was discounted by 2 USD. Now 9 m of textile cost as before 8 m. Calculate the old and new price of 1 m of the textile.