alleryदोन बहिणींच्या वयांचे गुणोत्तर 5 : 7 आहे आणि चार वर्षांपूर्वी त्यांच्या वयांची बेरीज 40 होती. मोठ्या बहिणीचे आजचे वय आहे:
A26
B28
C20
D24
Answer & Solution
Correct answer: B. 28
सध्याची बेरीज 12 भागांवर 48 आहे, म्हणून एक भाग 4 आहे आणि मोठी बहीण 7 x 4 = 28 आहे.
Keep practising Ratio and Proportion
Browse all Ratio and Proportion questions for RRB NTPC, or explore more Quantitative Aptitude topics.
Related questions
If the ratio of boys to the whole class is 3 : 8, the ratio of boys to girls isA 40 kg mixture has A, B, C, D in the ratio 5 : 9 : 4 : 2. The amount of B isA screen has a 4 : 3 aspect ratio and is 32 cm wide. Its height isIn metrology, a ratio is a dimensionless quotient of two quantities measured inBoys are 3/8 of a class and number 60. How many girls are there?A ratio is 7 : 13. The first term is what percent of the total of both terms?The ratio 3 : 5 expressed as a percentage means the first is what percent of the second?If 3 : x = 12 : 20, then x is