Question

Louis works in a stone quarry with his brother and cousin. Every day they are given a pile of rocks which they must carry up a hill. Today Louis transported two thirds of the pile of rocks, his brother transported a fifth and their cousin transported 60 rocks. How many rocks did Louis and his brother each carry?

276

likes
1381 views

Answer to a math question Louis works in a stone quarry with his brother and cousin. Every day they are given a pile of rocks which they must carry up a hill. Today Louis transported two thirds of the pile of rocks, his brother transported a fifth and their cousin transported 60 rocks. How many rocks did Louis and his brother each carry?

Expert avatar
Corbin
4.6
107 Answers
Calculons le nombre de roches que Louis et son frère ont transportées. Supposons que le nombre total de roches dans le tas soit représenté par la variable « x ». Louis a transporté les deux tiers du tas, soit (2/3) * x roches. Son frère a transporté un cinquième du tas, soit (1/5) * x roches. On sait que leur cousin a transporté 60 pierres. Nous pouvons établir l’équation suivante pour représenter le nombre total de roches dans le tas : (2/3)x + (1/5)x + 60 =x Pour résoudre x, nous pouvons commencer par simplifier l’équation : (10/15)x + (3/15)x + 60 =x (13/15)x + 60 =x Ensuite, nous pouvons isoler x en soustrayant (13/15)x des deux côtés : 60 = x - (13/15) x 60 = (2/15)x Pour trouver x, nous pouvons multiplier les deux côtés par 15/2 : (15/2)(60) =x 450 = x Le nombre total de pierres dans le tas est donc de 450. Calculons maintenant le nombre de roches transportées par Louis et son frère : Louis transporté (2/3) * 450 roches = 300 roches. Son frère a transporté (1/5) * 450 roches = 90 roches. Ainsi, Louis a transporté 300 roches et son frère en a transporté 90.

Frequently asked questions (FAQs)
Question: What is the equation of a line passing through the median of a triangle, given the coordinates of its vertices?
+
What is the product of (3.6 x 10^5) and (2 x 10^-3)?
+
What is the quadratic formula and how is it used to solve a quadratic equation?
+
New questions in Mathematics
-11+29-18
The derivative of a power is obtained just by subtracting 1 from the power True or false
1 plus 1
(3x^(2) 9x 6)/(5x^(2)-20)
If eight basketball teams participate in a tournament, find the number of different ways that first, second, and third places can be decided assuming that no ties are allowed.
calculate the area in square units of A rectangle with length 6cm and breadth 5cm
determine the polynomial F of degree 2 that interpolates. f at points (0;1) (2;5) (4;6). calculate F(0.8). Note: Using the polynomial expression with difference operator.
With the aim of identifying the presence of the feline leukemia virus (FeLV), blood samples were collected from cats sent to a private veterinary clinic in the city of Belo Horizonte. Among the animals treated, it was possible to observe that age followed a Normal distribution with a mean of 4.44 years and a standard deviation of 1.09 years. Considering this information, determine the value of the third quartile of the ages of the animals treated at this veterinary clinic. ATTENTION: Provide the answer to exactly FOUR decimal places
A box of numbered pens has 12 red, 12 blue, 12 green and 12 yellow pens. The pens for each colour are numbered from 1 to 12. There is a unique number on each pen, so no pen is exactly the same as any other pen in the box. When reaching into the box to randomly draw five pens without replacement, what is the proportion of getting exactly four pens of the same colour (Note: the numbers matter but the order does not)?
sum of 7a-4b+5c, -7a+4b-6c
Convert 5/9 to a decimal
ind the z-score for which 72% of the distribution's area lies between -z and z. -1.7417, 1.7417 -1.1538, 1.1538 -1.0803, 1.0803 -2.826, 2.826
In a 24 hours period, the average number of boats arriving at a port is 10. Assuming that boats arrive at a random rate that is the same for all subintervals of equal length (i.e. the probability of a boat arriving during a 1 hour period the same for every 1 hour period no matter what). Calculate the probability that more than 1 boat will arrive during a 1 hour period. (P(X>1) ) Give your answers to 4 decimal places and in a range between 0 and 1
factor the polynomial completely over the set of complex numbers b(x)=x^4-2x^3-17x^2+4x+30
Let X be a discrete random variable such that E(X)=3 and V(X)=5. Let 𝑌 = 2𝑋^2 − 3𝑋. Determine E(Y).
x²-7x+12=0
To paint a 250 m wall, a number of workers were employed. If the wall were 30 m longer, 9 more workers would be needed. How many were employed at the beginning?
answer this math question The scale on a map is drawn so that 5.5 inches corresponds to an actual distance of 225 miles. If two cities are 12.75 inches apart on the map, how many miles apart are they? (Round to the nearest tenth) miles apart. The two cities are how many miles apart
3(x-4)=156
Sarah is lining a square tray with 1 inch square tiles. the side length of the tray is 9 inches. How many tiles does Sarah need?