Agarrison of 1500 men has previsions for 48 days. how long would they last if after 13 days it is reinforced by 660 men?

24.30 days

Step-by-step explanation:

Let one person consume x kgs in a day

No. of Men = 1500

Total available provision for 48 days = 48 x 1500x

Thus the provision consumed in 13 days = 13 x 1500x

Remaining Provision = Total Provision – consumed provision

= 72000x – 19500x

=52500x

Now 660 men were added , Hence total strength will be 1500+660 = 2160

Provision consumed in one day = 2160x

Provision left = 52500x

Hence number of days for which provision can run

=24.30 days

Hence the provison will end for 24.30 more days

First, let's start off with the information we already have. Since the ratio is 4 boys to 5 girls, there has to be a minimum of 9 students (4 being boys and 5 being girls).

9 will be the denominator of both of our fractions since the boys and girls are in the same class.

The fraction of boys in the class is 4/9 (since there are 4 boys to 5 girls in a class of 9, we would write 4 over 9) and the fraction of girls in the class is 5/9.

This is a simplified version of the fractions. If this is a multiple-answer question and 4/9 and 5/9 are not up there, try multiplying the fractions with different numbers and see what fractions will be correct. 

But either way, 4/9 and 5/9 are correct :)