a contractor undertook a contract to complete a part of a stadium in 9 months with a team of 560 persons.later on, it was required to complete the job in 5 months .how many extra persons should he employ to complete the work?
Less months = More people required. Therefore, we use inverse variation. X (months) = 9 Y (people) = 560 New :- X (months) = 5 months Y (people) = ?
in Inverse Variation, k = xy
9* 560 = 5y
y = 9 * 560/ 5 = 9 *112 = 1008 Therefore, 1008 - 560 = 432 extra people are required!
in Inverse Variation, k = xy
9* 560 = 5y
y = 9 * 560/ 5 = 9 *112 = 1008 Therefore, 1008 - 560 = 432 extra people are required!