Legs

Cancer has 5 pairs of legs. The insect has 6 legs. 60 animals have a total of 500 legs. How much more are cancers than insects?

Correct answer:

d =  10

Step-by-step explanation:

$$\begin{gathered} 5\cdot 2\cdot r+6\cdot h=500 \\ r+h=60 \\ 6h+10r=500 \\ h+r=60 \\ h=25 \\ r=35 \\ d=r-h=35-25=10 \end{gathered}$$

Try another example

Related math problems and questions:

• 925 USD
  Four classmates saved an annual total 925 USD. The second save twice as the first, third 35 USD more than the second and fourth 10 USD less than the first. How USD save each of them?
• Pears
  Andrew, Lenka and Rasto have together 232 pears. Lenka has 28 more than Rasto and Rasto pears have 96 more than Andrew. Determine how much each of them has pears.
• Bottles
  The must is sold in 5-liter and 2-liter bottles. Mr Kucera bought a total of 216 liters in 60 bottles. How many liters did Mr. Kucera buy in five-liter bottles?
• Employees
  1116 people are working in three factory halls. In the first one, there are 18% more than the third, and 60 persons more than the second. How many employees work in individual halls?
• Money
  Peter has 2x more money than Michael. But if Peter gave Michael € 16 Michael would have 3.5 times more money than Peter. Determine how much money was originally Peter and how much Michael.
• Alcohol mixing
  How much 55% alcohol we must pour into 1500 g 80% alcohol to form a 60% alcohol? How much 60% alcohol created?
• Euros
  Peter, Jane, and Thomas have together € 550. Tomas has 20 euros more than Jane, Peter € 150 less than Thomas. Determine how much has each of them.
• Sheep
  Shepherd tending the sheep. Tourists asked him how much they have. The shepherd said, "there are fewer than 500. If I them lined up in 4-row 3 remain. If in 5-row 4 remain. If in 6-row 5 remain. But I can form 7-row." How many sheep have herdsman?
• Boys and money
  270 USD boys divided so that Peter got three times more than Paul and Ivan has 120 USD more than Paul. How much each received?
• Repairing
  Three employees earned a total of € 469 for repairing the equipment. They split so that the first got 20% more than the second, and the third 15% more than the second. How many euros did everyone get?
• The school
  The school has 268 boys. Girls are 60 more than boys. How many children are there at school?
• The tourist
  The tourist traveled 190km in 5 hours. Part of the journey passed at 5 km/h. The rest he went by bus at a speed of 60 km/h. How long has a bus going?
• Dollars
  Mama split 760 dollars Jane, Dane and Eva as follows: Jane got three times more than Dane and Dane and got 40 more than Eva. How much does get each of them?
• Together m+w
  Women 30%. Men are 360 more. How many are together?
• Meadow
  On the meadow grazing horses, cows, and sheep, together with less than 200. If cows were 45 times more, horses 60 times more, and sheep 35 times more than there are now, their numbers would equally. How many horses, cows, and sheep are on the meadow toget
• Benches
  The park has 64 benches. Occupied are by 18 more than empty. How many benches are occupied and empty ?
• Jane
  Jane buy gift together for 464 Sk. For tie paid 4.5 times less than in the shirt, but 56 Sk more than for socks. How much she paid for each item in gift?