A garrison has provision for 30 days for certain men. If 2/3 of them do not attend the mess then the food will last for?
Correct answer: B. 90 days
- A. 50 days
- B. 90 days
- C. 65 days
- D. 55 days
Explanation
The total food represents 30 x 1 = 30 man-days in units of the original garrison's daily consumption. If 2/3 do not attend, only 1/3 remain, so the food lasts 30 ÷ 1/3 = 90 days. The likely mistake is choosing 50 days, which does not correctly apply the inverse relationship between men and days.
Last updated
About Ratio and Proportion
Ratios compare quantities in the same units, while proportions state that two ratios are equal. Problems cover simplification, division in a given ratio, direct and inverse variation, scale, and missing terms, with attention to the difference between a ratio and a fraction representing part of a whole.
Practise Arithmetic
1,060 free Arithmetic MCQs from Mathematics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Mathematics questions like this
Mathematics is on 67 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.