The mountain hut

The mountain hut has a supply of food for 8 tourists for 15 days. Half more were come. How long will their food supply last if the daily ration remains the same?

Correct answer:

d =  10

Step-by-step explanation:

$$\begin{gathered} t=8 \\ m=t\cdot 15=8\cdot 15=120 \\ {t}_2=t+t\mathrm{/}2=8+8\mathrm{/}2=12 \\ d=m\mathrm{/}{t}_2=120\mathrm{/}12=10 \end{gathered}$$

Try another example

Related math problems and questions:

• Digging companies
  Company A would dig a pit for 12 days, company B for 15 days, company C for 20 days and the company D for 24 days. Work began together companies C and D, but after three days joined them other two companies. How long took to dig a pit?
• Workers
  Two workers A and B, will be done work together for 15 days. They worked together for 13.5 days. Then A worker became ill, and worker B finish the job alone for 7.5 days. If every worker was working alone, how many days took whole work for worker A and B?
• Mason with assistant
  Mason had to complete the work in 10 days. Two and a half days later, his assistant arrived. Together they completed the work in the next three and a half days. How many days would he need an assistant for the same work?
• Two masons
  Two masons built the garage together - it took 18 days. If they worked independently, the other would work 15 days more than the first. For how many days would build the garage each mason himhelp?
• Feed for horses
  In the kennel have feed for two horses for 21 days. The station brought an additional 5 horses. How many days will last the feed for all the horses if they have the same daily ration?
• Workhorses
  A team of colleagues done the work in 20 days. After adding 2 colleagues from the beginning the work was completed in 15 days. How many members has the colleague team?
• Daily average
  Calculate the average temperature during the day, when 15 hours were 20 °C and 9 hours was 13 °C.
• 15 teachers
  15 teachers teach for a combined amount of 128 days over a period of 64 days. What is this expressed as a percentage?
• Two companies
  Company A can fulfill the order in 12 days, company B the same order in 18 days. How many days will the order be fulfilled if only company A works on it for the first two days, then the remaining days for both companies two?
• Repair pipe
  20 workers had to repair broken pipes in 30 days. After fourteen days, four laborers joined them. How long did the pipe repair work last?
• Three pumps
  We are filling the pool. The first pump would be filled in 12 hours, the second pump in 15 hours. If all three pumps were running at the same time, it would fill the pool for 4 hours. How long would the pool fill only with the third pump?
• On the farm
  On the farm were housed 70 heads of cattle with food supply for 180 days. After 60 days, 10 head of cattle sold, and for the next 30 days they sold 10 more. How many days is sufficient supply of feed for the remaining cattle?
• Hectares of forest
  12 workers plant 24 ha of forest in 6 days. In how many days will 15 people and 12 people plant the same area?
• Painters
  Five painters painting the fence for eight days. How many days over will take work if paint the fence only four decorators?
• A lot of hay
  Martin's grandfather weighed a lot of hay and calculated that for 15 rabbits it last in 100 days. How many days will this lot be enough for 25 rabbits?
• Six workers
  Six workers planned to repair the roof in 5 days. After two days, two workers get sick. How long will the remaining workers complete the roof at the same rate of work?
• Grandma
  6 kg of potatoes is enough for four at home for 15 days. For how many days will this amount be enough if a grandma will visit?