A bus can cover a certain distance in 3 hours 20 minutes at an average speed of 45 km/h. how long will it take to cover the same distance at a speed of 36 km/h ?
A military camp has provisions for 630 men to last for 25 days. how many men must be transferred to another camp so that the food lasts for 30 days ?
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30/25×630=756
30/25×630 6/5×630. 6×126=756
30/25×630 6/5×630. 6×126=756
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