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Time and work, speed, interest, analytical reasoning

TGPSC Group-I Mains questions on this chapter, grouped by sub-topic.

7

questions in total

Asked in 1 of 2 sittings since 2016

2016

–

2024

7

Most tested: Applied quantitative reasoning through relative speed/time-work and basic deduction puzzles.

All 7 questions, organised by sub-topic

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Pipes and cisterns1

2024Two pipes A and B when opened simultaneously can fill an empty tank in 72 minutes. When the tank is initially empty, only pipe A is opened for 15 minutes. Next pipe A is closed and only pipe B is opened for 15 minutes. For filling the remaining part of the tank, if pipe A alone takes 76 minutes and pipe B alone takes K hours L minutes, then what are the factors the number (K+L)?

Circular track, relative speed1

2024On a circular track of 2 km, two persons A and B are running in clockwise direction with speeds 10 km/hr and 7 km/hr respectively. Another person C is running in anti-clockwise direction with the speed of 5 km/hr. If all the three start running from the same point and same time, after how much time will the three persons meet for the first time?

Races, speed and time1

2024Two persons P and Q started a 300 meter race. Initially the speeds of P and Q are in the ratio 1 : 2. After 't' seconds, P quadrupled (four times) his speed and as a result, both of them reached the endpoint at same instant of time. But after 't' seconds, if P tripled his speed and Q reduced his speed by 5 seconds, then the race would have been won by 5 seconds. What is the value of 't'?

Simple interest1

2024A person Y borrowed some money of Rs. 8000/- for simple interest at the rate of 6% per annum for the first 3 years, 9% per annum for next 5 years and 13% per annum for the period beyond these 8 years. If the total interest paid by Y at the end of nth year is Rs. 8160/- then find the value of n.

Syllogism1

2024Below three Statements followed by four conclusions numbered I, II, III and IV are given. You have to consider the given statements to be true even if they seem to be at variance with commonly known facts and Judge the Conclusions on the basis of it. Statements: S1: All pens are tables. S2: All tables are chairs. S3: All pencils are chairs. Conclusions: I: No pen is a pencil. II: Some pencils are tables. III: Some chairs are pens. IV: Some pencils are pens.

Analytical reasoning: birth years1

2024Five friends A, B, C, D and E all were born on 8th October in different years from 1990 to 1994. No two persons were born in the same year. A is elder than B, but younger than E. C is elder than B, but younger than A. D is younger than E but elder than A. On which of the week day A born? [As printed. 2024 paper wording preserved.]

Coding and decoding1

2024In a code language REASON is coded as TBFLZA. In the same language which word will be coded as XLWMPK.

Ghissu

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