80.4-(15.46+4.54)÷0.4
80.4 - (15.46 + 4.54) ÷ 0.4
First, we simplify the expression inside the parentheses:
(15.46 + 4.54) = 20
Next, we divide 20 by 0.4:
20 ÷ 0.4 = 50
Finally, we subtract 50 from 80.4:
80.4 - 50 = 30.4
So, 80.4 - (15.46 + 4.54) ÷ 0.4 equals 30.4
In a farm ,on average every 6 cows produce 108 litres of milk per week .in five weeks the cows produce 2160 litres of milk. How many cows are in the farm
Let's assume the number of cows on the farm is represented by "x".
Since, on average, every 6 cows produce 108 liters of milk per week, we can set up a proportion to find the number of liters produced by "x" cows in 5 weeks:
(108 liters/week) * 5 weeks = (2160 liters / x cows)
Cross-multiplying, we get:
108 * 5 = 2160 / x
540 = 2160 / x
To solve for "x", we divide both sides by 540:
x = 2160 / 540
x = 4
Therefore, there are 4 cows on the farm.
If the are of a rectangular piece of land is 220 square metres. If the width is 12.5m .what is the perimeter of the piece of land
To find the perimeter of a rectangle, we can use the formula:
Perimeter = 2 * (Length + Width)
In this case, we're given the width as 12.5 meters. To find the length, we can use the formula for the area of a rectangle:
Area = Length * Width
Since, we're given the area as 220 square meters, we can rearrange the formula to solve for the length:
Length = Area / Width
Length = 220 / 12.5
Length = 17.6 meters
Now, we can substitute the values of the length and width into the perimeter formula:
Perimeter = 2 * (17.6 + 12.5)
Perimeter = 2 * (30.1)
Perimeter = 60.2 meters
Therefore, the perimeter of the rectangular piece of land is 60.2 meters.
A rectangular brick weighs 3kg750g. How many such bricks can be loaded into a lorry which can carry 3 tonnes
To find out how many rectangular bricks can be loaded into the lorry, we need to convert the weight of the lorry's load capacity to grams to make it consistent with the weight of the bricks.
1 tonne is equal to 1000 kilograms, and 1 kilogram is equal to 1000 grams. Therefore, 1 tonne is equal to 1,000,000 grams.
The lorry's load capacity is 3 tonnes, so it can carry 3,000,000 grams (3 x 1,000,000).
We are given that each rectangular brick weighs 3kg750g. To convert this weight to grams, we need to multiply the kilograms by 1000 and then add the grams.
Weight of one rectangular brick = 3kg x 1000g + 750g = 3000g + 750g = 3750g
Now, we divide the total load capacity of the lorry (3,000,000 grams) by the weight of one rectangular brick (3,750 grams) to find out how many bricks can be loaded into the lorry:
Number of bricks = 3,000,000 grams / 3,750 grams = 800
Therefore, the lorry can load 800 rectangular bricks.
Kyle cycled from town at an average of 72k/h and took 3 hours 30mins to reach town s. Cindy travelled the same distance and took 4 hours at what average speed was Cindy cycling
To find Cindy's average speed, we need to determine the distance they both traveled.
Since Kyle cycled at an average speed of 72 km/h and took 3 hours and 30 minutes (which is equal to 3.5 hours) to cover the distance, we can calculate the distance using the formula:
Distance = Speed × Time
Distance = 72 km/h × 3.5 h = 252 km
Now that we know the distance they both traveled, we can find Cindy's average speed by dividing the distance by the time it took her.
Cindy's average speed = Distance / Time = 252 km / 4 hours = 63 km/h
Therefore, Cindy cycled at an average speed of 63 km/h.
To solve the expression 80.4 - (15.46 + 4.54) ÷ 0.4, we need to follow the order of operations, also known as PEMDAS (Parentheses, Exponents, Multiplication and Division - from left to right, and Addition and Subtraction - from left to right).
Let's break it down step by step:
Step 1: Solve the expression inside the parentheses first.
15.46 + 4.54 = 20
So, the expression becomes 80.4 - 20 ÷ 0.4.
Step 2: Perform the division.
20 ÷ 0.4 = 50
Now, the expression becomes 80.4 - 50.
Step 3: Solve the subtraction.
80.4 - 50 = 30.4
Therefore, the final answer is 30.4.