a field can be cleared by 33 men in 15days. how many more person required if the field has to be cleared 4 days earlier?

12 men

Step-by-step explanation:

33men x 15 days = the whole project

Let the men that are required be x.

33 x 15 = (15-4)x

495 = 11x

x = 45

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.