Equations practice problems - page 152 of 241
Number of problems found: 4815
- Time Puzzle Midnight
A pedestrian met Street Math and asked him what time it was. "Add half the time to midnight to a quarter of the time, and you'll get the exact time." What time was it? - Twenty
Twenty rabbits are put in 4 cells so that there are a different number of rabbits in each cell containing at least three rabbits. What is the largest possible number of rabbits in one cell? - Dropped sheets
Three consecutive sheets dropped from the book. The sum of the numbers on the pages of the dropped sheets is 273. What number has the last page of the dropped sheets? - Aquarium Dimensions and Volume
The aquarium dimensions are in the ratio a: b: c = 5:2:4. 6600 cm² of glass was used for its production. How many liters of water will fit in the aquarium if it reaches 5 cm below its edge? - 12 apples
Twelve apples and two loaves of bread cost 5.76, and 6 apples and three loaves of bread cost 7.68. How much is a loaf of bread? - Average mark
In the 6th class, the average half-year mark in physics was 1.7. At the end of the year, Mathias improved his mark from 2 to 1, Ivana from 3 to 2, and Elena from 4 to 2. Paul worsened his mark from 3 to 4. The average mark of the whole class thus improved - Team athletes
There are 99 athletes on the American team. There were 35 more athletes in the Japanese expedition than in the American one. There is an eighth less in the Czech expedition than in the Japanese expedition. How many athletes are there on individual expedit - Natural numbers equation
Find the natural numbers x and y such that: 1/2 = x / y and in addition that: x + y = 6 - Flying
The airplane from Prague to Bratislava was flying at a speed of 60 km/h less and back by 70 km/h greater than the original speed. What was the original speed if the plane returned to Prague according to the timetable? - Exponential warm
Suppose that a body with temperature T1 is placed in surroundings with temperature T0 different from that of T1. The body will either cool or warm to temperature T(t) after time t, in minutes, where T(t)=T0 + (T1-T0)e^(-kt). If we placed jello salad at 30 - Pair of numbers What is the value of the smaller of a pair of numbers for which their sum is 78, and their division quotients are 0.3?
- Two brothers
Two brothers want to collect 20 kg of chestnuts. If only Marek collected, he would make it in 30 minutes. It would take Milan 10 minutes longer. How long after Mark does Milan have to start collecting to be finished in 18 minutes? - Three-Day Hike Distances
Jonas and Vojta went on a three-day hike on Friday. On the first day, they covered a fifth of the total route, on Saturday three-quarters of the challenging route, and had 20 km left for Sunday. What percentage of the total route did the boys cover in the - Ratio of Two Numbers
Fifty percent of the number x equals sixty percent of the number y. What is the ratio of the numbers x and y? - Sixty
Sixty percent of one-fifteen of the total is equal to thirty. What are two percent of the total? - Exercise creation Three lecturers will create 75 tasks in two and a half days. In how many days will it take at least five lecturers to create enough exercises for the exercise book, which should contain 300 exercises? (we assume that all tutors are equally efficient and w
- Map scale
The rectangular plot has a scale of 1:10000 and an area of 3 cm² on the map. What area does this plot have on a 1:5000 scale map? - Fractions Comparison Times Larger
How many times are the three halves larger than eighty percent of the three quarters? - 13 tickets
A short and long sightseeing tour is possible at the castle. A ticket for a short sightseeing circuit costs CZK 60, for a long touring circuit costs CZK 100. So far, 13 tickets have been sold for 1140 CZK. How much did you pay for tickets for a short tour - Hotel Rooms Count Triples
There are a total of 110 beds in the hotel, which are available in single, double, and triple rooms, while there are three times more triple rooms than single rooms and twice as many double rooms as triple rooms. How many triple rooms are there in total i
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