lilaaaaaaaaaisdabest
lilaaaaaaaaaisdabest lilaaaaaaaaaisdabest
  • 14-06-2022
  • Mathematics
contestada

A girl can do her homework in 1.5 hours. How long would It take her twin brother to do the same homework alone if together they do it in 40 minutes?

Respuesta :

ooblecksrm ooblecksrm
  • 14-06-2022

Answer:

72 minutes

Step-by-step explanation:

in minutes,

1/90 + 1/x = 1/40

x = 72

Answer Link

Otras preguntas

A blue rope is 3 times the length as a red rope. A green rope is 5 times as log as the blue rope of the total length of all 3 ropes equals 508.25m what is the l
What is the creepiest sounding scale? What scale would u use for writing creepy music in other words
a lunch bill including tax, is divided among you and 5 friends. everyone pays less than $8.75. write and solve an inequality that describes the total amount of
What all the multiples of 81?
a lunch bill including tax, is divided among you and 5 friends. everyone pays less than $8.75. write and solve an inequality that describes the total amount of
A blue rope is 3 times the length as a red rope. A green rope is 5 times as log as the blue rope of the total length of all 3 ropes equals 508.25m what is the l
What's 5 divided by x squared explain
Thelma spent 1/6 of her weekly allowance on dog toys.  1/4 on a dog collar and 1/3 on dog food.  What fraction of her weekly allowance is left
What all the multiples of 81?
Thelma spent 1/6 of her weekly allowance on dog toys.  1/4 on a dog collar and 1/3 on dog food.  What fraction of her weekly allowance is left