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In a plane mirror, image is formed behind the mirror at the same distance as the object is in front of it. Therefore, if the distance between an object and its image is 2m then object must be 1m ahead of the mirror. The girl should therefore walk 5 – 1 = 4 towards the mirror.
In each population, 30% of the population is affected with asthma out of which 90% of asthma patients used to work in flour mills. If 30% of the total p...
If 40% of 'P' is 60 less than 30% of 'Q', then find 250% of 'Q', given that (P + Q) = 900.
In 2018, the income-to-expenditure ratio of Vishal was 5:3. The following year, his income increased by 10% while his expenditure rose by 15%. Determine...
84 is what % of 120?
A person saves 25% of his monthly income. If his monthly is increased by 35% and he still saves the same amount as before then find percentage increase ...
A gets 34% of the full marks in an exam and fails by 80 marks. B gets 36% of the full marks in the same exam and he also fails by 64 marks. What is the ...
Out of a total of 120 students in a class, 50% are boys and the rest are girls. Out of the total number of students who appeared in the class test, 35% ...
During a particular year, 'R' managed to sell 1500 shirts. 'A' sold 30% more shirts than 'R', and 'X' sold 20% fewer shirts than 'A'. What is the ratio ...
In a class of 80 students, 60% are boys, and the remaining are girls. Out of the boys, 25% are good in mathematics, and out of the girls, 50% are good i...
A man spends 40% of his income on rent, 30% on food, and 20% on other expenses. He saves the remaining ₹12,000. What is his total income?