Ratio + time - practice problems - page 11 of 12
Number of problems found: 236
- Family and age ratios
The age of father and son is in the ratio 10:3; the age of father and daughter is in the ratio 5:2. How old are father and son if the daughter is 20? In what ratio is the age of sister and brother? - Dog
The man went with a dog on a long walk 17 km from the house. The man is walking at a speed of 4.9 km/h. A dog constantly runs between the house and the man at 12.6 km/h. How many kilometers will the dog run when they reach its destination? - Divers
20-member group of divers carries the air for 15 hours of diving. 4 members of the expedition were sick or weren't coming. How many hours is sufficient air to other divers? - Road repair
Road repair took 19 days for 35 workers if they worked 9 hours a day. How many days take to repair the same road 26 workers if they work 10 per day?
- Cyclist
A cyclist passes 64 km in 4 hours. How many kilometers did he pass in 7 hours? - Clock
How many times a day do hands on a clock overlap? - Map
On the tourist map, on a scale of 1:100000 is the distance between two points along a straight road 8.9 cm. How long travels this distance on a bike at 25 km/h? Time express in minutes. - Forestry workers
41 laborers have employed planted trees in the forest. For 7 hour work, a day would end job in 32 days. After 12 days, 7 laborers go forth? How many days are needed to complete planting trees in nurseries by others if they work 8 hours a day? - Excavation
Mr. Vendelín calculated that excavation for a water connection digs for 10 days. His friend would take 10 days. Vendelín worked 3 days alone. Then his friend came to help and started on the other end. On what day since the beginning of the excavation they
- Three cats
If three cats eat three mice in three minutes, after which time 70 cats eat 70 mice? - Troops
The route is long 175 km. On the first day, the first regiment went at an average speed of 14 km/h and back at 24 km/h. On the second day, the second regiment went on the same route at an average speed of 25 km/h there and back. Which regiment will take t - TV fail
After 10,000 hours, the TV has an average of 15 failures. Find the probability of TV failure after 500 hours of operation. - Pediatrician
Pediatrician, this month of 24 working days takes 6 days holidays. What is the probability that it will be at work on Monday? - Hens
13 hens will eat spilled grain from 6 AM to 4 PM. At 11 hour grandmother brought 5 hens from the neighbors. At what time was grain out?
- Work
The first paver paves the pavement for 27 hours. Second for 27 hours. I started the first paver and, after 4 hours, joined the second. How long will they finish the pavement? - Motion problem
From Levíc to Košíc, go car at speed 81 km/h. From Košíc to Levíc, go another car at speed 69 km/h. How many minutes before the meeting will be cars 27 km away? - Beer
After three 10° beers consumed in a short time, there is 5.6 g of alcohol in 6 kg adult human blood. How much is it per mille? - Motion
If you go at speed 6.2 km/h, you come to the station 52 minutes after leaving the train. If you bike to the station at speed 23 km/h, you come to the station 51 minutes before its departure. How far is the train station? - Gimli Glider
Aircraft Boeing 767 lose both engines at 35000 feet. The plane captain maintains optimum gliding conditions. Every minute, lose 2100 feet and maintain constant speed 201 knots. Calculate how long it takes for a plane to hit the ground from engine failure.
Calculate fixed annual personnel costs of operating monorail line 115 km long if every 7 km is a station that serves three people - one dispatcher and two switchmen in 4-shift operation. Consider the average salary of the employee 829 euro.Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
