To solve this problem, we need to calculate the cost price (CP) and selling price (SP) of a single banana or a common number of bananas. Then, we find the profit per banana or per common number of bananas. Finally, we determine how many bananas need to be sold to achieve the target profit of Rs. 90.
The man bought 10 bananas for Rs. 8.
\[ \text{CP of 1 banana} = \frac{\text{Rs. } 8}{10 \text{ bananas}} = \text{Rs. } 0.80 \text{ per banana} \]He sold 8 bananas for Rs. 10.
\[ \text{SP of 1 banana} = \frac{\text{Rs. } 10}{8 \text{ bananas}} = \text{Rs. } 1.25 \text{ per banana} \]Profit per banana is the difference between SP and CP of one banana.
\[ \text{Profit per banana} = \text{SP} - \text{CP} = \text{Rs. } 1.25 - \text{Rs. } 0.80 = \text{Rs. } 0.45 \text{ per banana} \]To earn a total profit of Rs. 90, we divide the target profit by the profit per banana.
\[ \text{Number of bananas} = \frac{\text{Total target profit}}{\text{Profit per banana}} = \frac{\text{Rs. } 90}{\text{Rs. } 0.45} \]\[ \text{Number of bananas} = \frac{90}{0.45} = \frac{90 \times 100}{45} = \frac{9000}{45} = 200 \]B) 200
The question asks to identify the odd one out from a given set of options. This typically involves finding a common theme or category that links three of the options, while the fourth one does not fit that category.
From these definitions, it is clear that Pathology, Nephrology, and Psychology are all branches of study or scientific disciplines, primarily related to biology, medicine, or the mind.
Correct Option: C) Shells — This option refers to a physical object (the hard outer casing of certain animals), unlike the other options which are names of scientific or medical disciplines.
The problem describes a triangle ABC where two sides are equal, making it an isosceles triangle. We are given the measure of one of the base angles. We need to find the measure of the vertex angle. We will use the properties of isosceles triangles and the angle sum property of a triangle.
Thus, the measure of angle B is \(30^\circ\).
Correct Option: A) 30°
The question asks to identify the specific location within the female reproductive system where fertilization typically occurs. This requires knowledge of the anatomy and physiology of human reproduction.
C) Fallopian tube — The fallopian tube (also known as the oviduct) is the primary site where the sperm and egg meet and fertilization takes place.
Find the minimum number of horizontal and vertical straight lines required to make the given figure.
To determine the minimum number of horizontal and vertical straight lines required to construct the given figure, we need to carefully analyze the arrangement of the lines in the diagram.
However, the question asks for the minimum number of horizontal and vertical lines only, which is \(3 + 3 = 6\).
Correct Option: B) 8
The problem asks us to identify the relationship between the first pair of words, "Stool : Bench", and then find an option that exhibits the same relationship. This is a verbal analogy question.
Correct Option: D) Foot-rule : yardstick
The question asks for the alternative name of the Great Indian Desert. This is a direct factual question related to the geography of India and the world's major deserts. We need to identify the correct name from the given options.
The Great Indian Desert is famously known as the Thar Desert. It is a large, arid region in the northwestern part of the Indian subcontinent that covers an area of 200,000 km2 (77,000 sq mi) and forms a natural boundary between India and Pakistan.
D) Thar — The Great Indian Desert is also known as the Thar Desert. It is the 17th largest desert in the world and the 9th largest subtropical desert.
In a flask of volume ‘V’ litres, 0.2 moles of O2, 0.4 moles of N2, 0.1 moles of NH3 and 0.3 moles of He gases are present at 27°C. If the total pressure exerted by these non-reacting gases is 1 atm, the partial pressure exerted by N2 gas is
This problem involves calculating the partial pressure of a gas in a mixture of non-reacting gases. We can use Dalton's Law of Partial Pressures, which states that the total pressure exerted by a mixture of non-reacting gases is equal to the sum of the partial pressures of the individual gases. Alternatively, the partial pressure of a gas can be calculated by multiplying its mole fraction by the total pressure of the gas mixture.
D) 0.4 atm is the partial pressure exerted by N\(_2\) gas.
The question asks about the factors determining the work done by a student lifting a book. Work done against gravity depends on the force applied and the vertical distance moved. We need to identify which physical quantities directly influence these factors.
Correct Option: D) The work done by the student will depend upon the weight of the book and the height of the bookshelf. This is because work done against gravity is calculated as the product of the weight of the object and the vertical distance it is lifted.