Question
6 years ago from now, ratio of ages of ‘R’ and
‘L’ was 5:7, respectively. If ‘L’ is 6 years elder to ‘R’, then what will be the age of ‘L’, 10 years hence from now?Solution
6 years ago from now, let ages of ‘R’ and ‘L’ be ‘5x’ years and ‘7x’ years, respectively. So, 7x – 5x = 6 Or, 2x = 6 Or, x = 3 Present age of ‘L’ = 7x + 6 = 7 × 3 + 6 = 27 years Age of ‘L’, ten years hence from now = 27 + 10 = 37 years
In an exam, Rahul scored 50% marks and failed by 75 marks whereas Priya scored 70% marks in the same exam and scored 55 marks more than the passing mark...
- The price of fuel increases by 10%, and a person reduces his usage by 5%. Find the percentage increase or decrease in his expenditure.
The number of boys and girls in a school is 200 and 320 respectively. 20% of boys left the school while 40 girls took admission in the school. Find the ...
The marks obtained by Meena in English is 40% more than the marks obtained by her in History, and the average marks scored by Meena in English, History,...
- A training batch consists of 2600 participants, out of which 20% are selected for an advanced workshop. If 1/4 of those selected are working professionals,...
A Salesman is allowed 18% commission on the total sales made by him and a bonus of 1% on the sales over Rs. 40000. If the total earning of a salesman is...
A and B have incomes in the ratio of 5:6. A spends 30% of his income and manages to save Rs. 17,500. Based on this information, calculate the income of B.
Two numbers are less than a third number by 36% and 40% respectively. Find the percent by which the second number is less than the first.
Income of A is twice the income of B. B and A spend 65% and 75% respectively of their incomes. Find the savings of A, if B saves Rs. 7000 in a month.
In 2018, an online course had 'r' subscribers. Subscribers increased by 50% in 2019 and another 25% in 2020. However, in 2021 subscribers decreased by 4...
Relevant for Exams:
