JAMB Mathematics 2019 Objective — Question 28

Question 28 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2019 Objective paper, with the correct answer and a full explanation.

A farmer planted 5000 grains of maize and harvested 5000 cobs, each bearing 500 grains. What is the ratio of the number of grains sowed to the number harvested?

A. 1:250,000Correct
B. 1:500
C. 1:25,000
D. 1:5,000

Explanation

Grains harvested = 5000 cobs × 500 grains = 2,500,000. Ratio of sowed to harvested = 5000 : 2,500,000 = 1:500. (Recomputed value is 1:500, matching option B; the source's stated key letter is A — flagged as a possible key inconsistency.)

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