Percentages MCQ Quiz in मल्याळम - Objective Question with Answer for Percentages - സൗജന്യ PDF ഡൗൺലോഡ് ചെയ്യുക

To find the maximum mass of the mineral that can be consumed, we calculate 0.002% of 2500 grams. First, convert the percentage to a decimal by dividing by 100: . Then multiply by the total mass of food: grams. Thus, the correct answer is 0.05 grams. Option 1 is incorrect because it results from miscalculating the percentage. Option 4 is incorrect due to an error in decimal placement.

The gadget's price is initially marked up by making it of its cost ( + ). The reduction is then applied to this price, resulting in . Thus, the final price is of the original cost. Therefore, the correct answer is .

To find the car's value after 4 years, calculate the annual depreciation using the formula . The rate is 10%, so . Calculate . First, is approximately 0.6561. Then, . Rounding gives us a value of $16,405. Therefore, option 1 is correct. Option 2 assumes a lower depreciation rate, option 3 assumes a 20% depreciation, and option 4 assumes only one year of depreciation.

Initially, the population is . A reduction each hour means after the first hour, the population is . After the second hour, it becomes . Then, an increase of means the population is . Thus, is of the original population, which is approximately .

First, since is less than , .

Next, since is more than , .

Substituting into the equation for , we get .

Therefore, is .

To find the maximum allowable weight of the additive, calculate 0.004% of 800 grams. Convert the percentage to a decimal: . Multiply by the total weight: grams. Therefore, the correct answer is 0.032 grams. Option 1 is incorrect as it miscalculates the percentage. Option 3 overestimates the result. Option 4 is incorrect due to an error in the decimal conversion.

To find the percentage of students who are on the basketball team, calculate 25% of the 70% who participate in sports: . Therefore, 17.5% of the students are on the basketball team. The correct answer is 17.5%. Incorrect answers may result from errors such as not multiplying the percentages or misinterpreting the percentage calculation.

To calculate a 65% increase in a number , we start by understanding that an increase of 65% means adding 65% of the original number to itself. The expression for this is . Simplifying this, we get . Thus, the correct expression is .

Option 1 is correct as it represents a 65% increase.

To find the new price after a 75% increase, we add 75% of the original price to itself. This is expressed as or .

Option 2 is correct because reflects the new price after the increase.

Option 1, , represents 75% of the original price, indicating a reduction to 25% of the original.

Option 3, , implies an increase of 7400%, which is incorrect.

Option 4, , suggests a decrease to 25% of the original price. Therefore, the correct answer is Option 2.

Consider the original price of the smartphone as . After a 50% increase, the price at the end of 2020 is . A subsequent 30% decrease results in . The net change from 2019 to 2021 is . Therefore, the correct answer is 5%.