Home › CA Foundation › Quantitative Aptitude › Basic Arithmetic › The ratio of two numbers is 7 : 10 and their dif…
The ratio of two numbers is 7 : 10 and their difference is 105. The numbers are
A(245, 350)
B(70, 175)
C(200, 305)
D(185, 290)
Answer & Solution
Correct answer: A. (245, 350)
1. Let numbers be 7k and 10k for positive k.
2. Difference 10k - 7k = 3k = 105.
3. So k = 35.
4. Numbers = 7(35) = 245 and 10(35) = 350.
_Source: ICAI BoS Foundation Paper 3, Ch 1 Unit I 'Ratio', p.5 Ex.1(A) Q17_
Related questions
A car uses 4 litres of petrol for 60 km. Its mileage in km per litre is:A man covers a distance in 6 hours at 40 km per hour. To cover it in 4 hours he must traveA man travels equal distances at 40 km per hour and at 60 km per hour. His average speed iA train 200 m long crosses a 100 m platform at 36 km per hour. It takes:A train 150 m long runs at 54 km per hour. The time it takes to pass a pole is:A car covers 300 km at 50 km per hour. At 75 km per hour the same trip would take:Zaheeda doubles her speed on the same route. The time she takes:A journey takes 120 km at a steady 60 km per hour. The time taken is: