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ISRO EC 2023 Q.94: solution and answer

ISRO 2023 · ECQ.94 · 1 mark · MCQ

Study the following table carefully and answer the questions given below it: [table of toy production, Years 1982-1986 against Toys A-E]. What was the percentage (approximate) increase in production of D type of toys from 1983 to 1985? (1 Mark)

ISRO EC 2023 question 94: A table with column header 'Years' and a spanning header 'Toys' over columns A, B, C, D, E.Tap to open full size
Figure from the ISRO EC 2023 paper. It is part of the question.
Figure description

A table with column header 'Years' and a spanning header 'Toys' over columns A, B, C, D, E. Rows: 1982: A 200, B 150, C 78, D 90, E 65. 1983: A 150, B 180, C 100, D 105, E 70. 1984: A 180, B 175, C 92, D 110, E 85. 1985: A 195, B 160, C 120, D 125, E 75. 1986: A 220, B 185, C 130, D 135, E 80.

  1. (A)

    10

  2. (B)

    20

  3. (C)

    19

  4. (D)

    76

Answer and solution

ANSWER

The production of D type toys increased by about 19% from 1983 to 1985, so the answer is (c).

Official answer: CSource: ISRO's revised and final answer key of 16 February 2024

  1. Read the column for toy D from the table: production in 1983 is and in 1985 is .

  2. Increase in production .

  3. Percentage increase is measured against the starting year, so the base is the 1983 value: .

  5. The nearest option is , which is option (c).

KEY IDEA

Percentage change is the change divided by the starting value, times 100. Here the starting year is 1983.

WATCH OUT FOR

Reporting the absolute increase of 20 as a percentage (option (b)), or dividing by the later value, , instead of the 1983 base.

From the ISRO EC 2023 paper. Also Q.94 of the ISRO Scientist/Engineer Computer Science 2023 paper. Every question of this paper · The full paper (PDF, ISRO) · All 2 ISRO Data interpretation questions, with notes