alleryThe 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_
Keep practising Basic Arithmetic
Browse all Basic Arithmetic questions for CA Foundation, or explore more Quantitative Aptitude topics.
Related questions
If 25% of a number plus 15 equals 40, the number isThe mean proportional between 4 and 16 equalsIf log a equals zero, the value of a isIf a : b = c : d, then by alternendo, the relation a : c = b : d meansThe value of x^(a-b) * x^(b-c) * x^(c-a) for any non-zero x isThe duplicate ratio of 3 : 4 isThe inverse ratio of 11 : 15 isIf a, b, c, d are in proportion (a : b :: c : d), then by componendo and dividendo, (a + b