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प्रश्न
A garrison has sufficient provisions for 480 men for 12 days. If the number of men is reduced by 160; find how long will the provisions last?
उत्तर
Strength of garrison = 480 men
Strength reduced by = 160 men
New strength of garrison = 480 − 160 = 320
Provision for 480 men lasts for = 12 days
Provision for 1 man last for = 480 × 12 days
Provision for 320 men lasts for =`(480xx12)/320` days
`=(3xx12)/2` = 18 days
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