SSC is well known for the recruitment of Group ‘B’ and ‘C’ posts under the Ministries/Departments in The Government of India. SSC organizes various examinations like Combined Graduate Level examination, Combine Higher Secondary Level, Stenographer and for SI/DP/CAPF, etc., throughout the year having almost the same Exam Pattern. The Exam paper is comprised of basically 4 subjects.
a. General Intelligence & Reasoning
b. English language & Comprehension
c. Quantitative Aptitude
d. General knowledge
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So, Jagranjosh.com has introduced a brief plan for revising topics at the time of examination. In this article, Ratio and Proportion which sometimes appear more difficult to understand in terms of Human Relationship.
Ratio and Proportion
Ratio and Proportion is one of the basic concepts used widely in Quantitative Aptitude section. Concepts from ratios are used to solve questions in Averages, Profit & Loss, Data Interpretation etc.
If the ratio between first and second quantity is a: b and third and fourth is c:d.
Inverse proportion: - The two given quantities are so related that if one quantity increases (or decreases) then the other quantity also decreases (or increases).
Example 2.If 10 men can do a work in 20 days then in how many days 20 men can do that work?
Sol 2. Here if men increase then days should decrease, so this is a case of inverse proportion, so
Therefore, three rice must be mixed in 39: 20: 20 ratios to have a new mixture of rice.
1. A certain amount was to be distributed among A, B and C in the ratio 2: 3: 4 respectively, but was erroneously distributed in the ratio 7: 2: 5 respectively. As a result of this, B got Rs 40 less. What is the amount? (IBPS CWE PO MT 2012)
(1) Rs. 210
(2) Rs. 270
(3) Rs. 230
(4) Rs. 280
(5) None of these
2. Rs.73,689/- are divided between A and B in the ratio 4: 7. What is the difference between thrice the share of A and twice the share of B? (IBPS CWE PO MT 2012)
(1) Rs. 36,699
(2) Rs. 46,893
(3) Rs. 20,097
(4) Rs. 26,796
(5) Rs. 13,398
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