- A10 km/hr.
- B20 km/hr.
- C30 km/hr.
- D40 km/hr.
To find the gain percentage, you can use the following formula: Gain percentage = (Gain / Cost) * 100 In this case, the cost is 100 - 15 = Rs.85 and the gain is 15, so the gain percentage is: Gain percentage = (15 / 85) * 100 This simplifies to: Gain percentage = 15/17* 20 So the gain percentage is 300/17%.
If the age of the mother 10 years ago was 3 times the age of her son, and the mother's age in 10 years will be twice the age of her son, the equation can be represented as: 3x+10+10=2(x+10+10) 3x+20=2x+40 x=20 The present ratio of the mother's age to the son's age is (3x+10):(x+10) = (3*20+10):(20+10) = 70:30 = 7:3.
According to the calculation,
the ratio of the number of men to the number of women required to reap the field is 1:3/2.
This means that for every 1 man,
3/2 women are required.
The calculation also shows that the total number of men and women required to reap the field is equivalent to 28 women.
Using this information,
we can determine that it will take 28 women,
or the equivalent number of men and women,
9 days to reap the field.
This is because 18 women can reap the field in 14 days,
and 28 women is a greater number,
so it will take longer to complete the work
The distance from A to B is given as d km. The average speed is calculated using the formula average speed = total distance traveled / total time taken. The total distance traveled is given as 2d km, which is the distance from A to B plus the distance from B to A. The total time taken is calculated by adding the time taken to travel from A to B to the time taken to travel from B to A. The time taken to travel from A to B is given as d/20 hours, and the time taken to travel from B to A is given as d/30 hours. Plugging the values for total distance traveled and total time taken into the formula for average speed, we get average speed = (2d km) / [(d/20 hours) + (d/30 hours)]. Simplifying the expression for total time taken, we get average speed = (2d km) / [5d/60 hours]. Finally, we can solve for the average speed by dividing both sides of the equation by 5d/60 hours, which gives us average speed = (2d km) / (5d/60 hours) = 24 km/hr
Let the third number be x Then, first number = 120% of x = 120x/100 = 6x/5 Second number = 150% of x = 150x/100 = 3x/2 Ratio of first two numbers = 6x/5 : 3x/2 = 12x : 15x = 4 : 5
Option B
Output:
Average weight of 49 students=[45kg-100g]
=44.9kg
Total weight of 49 students=(44.9×49)kg=2200.1kg.
Weight of the student who left the class=(2250-2200.1)kg=49.9kg.
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