Question

a Garrison of 750 man has a provision for 20 weeks if at the end of 4 weeks they are reinforced by 450 men or long will the remaining provision last

Answer 1

Answer:

given that 750 man for 20 weeks so there will be 750 *20=15000 week man

week man for  4 weeks  = 750*4=3000

so at the end of 4 weeks week man will be 15000 - 3000=12000

450 men were added so total men will be 750+450=1200 men

number week will be =12000/1200=10 weeks provision will last

Step-by-step explanation:

Answer 2

Answer:

The Remaining provision last for 10 weeks.

Step-by-step explanation:

Let each men consume 1 kg provisions per week.

Given,750 man has a provision for 20 weeks.

Available provision= $750 \times 20 = 15000$

Kg

In 4 weeks,they consumes $750 \times 4 = 3000$kg food.

Provision left$= 15000 - 3000 = 12000$kg

Now 450 more men join and the strength of Garrison becomes 1200 men.

The provision will NOW last for 12000/1200 = 10 weeks.