lukeallen5140 lukeallen5140
  • 21-02-2022
  • Mathematics
contestada

4 people can dig a trench in three hours how long would it take 9 people

Respuesta :

therealkanjay
therealkanjay therealkanjay
  • 23-02-2022

Answer:

6h 45 min

Step-by-step explanation:

4 × x = 3h

x = 3 ÷ 4 = 45 min

9 × 45 min = 405 min = 6.75 h

Answer Link

Otras preguntas

predict how two differenet herbivores can share the same plant resource
An element X belongs to 4th period and 17th group. Write the formula of the compound formed when it reacts with Y( atomic no.-13, mass no.27.)
Who wrote the dystopian novel Nineteen-Eighty-Four in which Newspeak demonstrates the heightened linguistic self-consciousness of modernist writers? a) George
Which of the following sentence containan a verb in the simple past tense ? A) Jenna has driven this route multiple times B) I was working overtime for about si
express 8 square roots of -65 in terms of i
find the zeros of the function h(x)=x^2-5x-50 by factoring
Rewrite the equation in vertex form: y=x^2-8x+13
Members of the fire department lean a 30-foot ladder against a building. The side of the building is perpendicular to the level ground so that the base of the l
if  sin (α+β) = 1,  sin (α-β) = 1/2 then tan (α+2β) tan(2α+β) = a. 1          b.-1            c.0              d. none
Members of the fire department lean a 30-foot ladder against a building. The side of the building is perpendicular to the level ground so that the base of the l