Mari y Jen trabajan 20 horas por semana en diferentes trabajos. Mari gana el doble de lo que gana Jen. Entre las dos, ganan $480. ¿Cuánto gana cada una de ellas en una semana? Por favor alguien ayúdeme, es un ejercicio verbal de matemáticas de las desigualdades y necesito saber cómo se hace la ecuación matemática. Muchas gracias.

Le daré Brainliest a la mejor contestación después de 1 día. :)

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

1. if events a and b are non-overlapping events, how do you find the probability that one or the other occurs? 2. what does it mean if p(a or b) equals 1?