Si Pepito recibe de su tío Pablo una propina y ahorra de la siguiente manera: la 1.a
semana 2 soles, la 2.a
semana 4 soles, la 3.a
semana 6 soles, la 4.a
semana 8 soles y así
sucesivamente por el lapso de 20 semanas
consecutivas, al cabo de esa fecha. ¿Cuánto
tendrá ahorrado en total?

47 - 90 = 43

43 - 180 = x

x = 137

ranks (& how to earn them):

-beginner (needs at least 0 points & 0 brainliest answers)

- hand (needs at least 100 points & 0 brainliest answers)

-ambitious   (needs at least 250 points & 0 brainliest answers)

-virtuoso (needs at least 500 points & 5 brainliest answers)

-expert   (needs at least 1,000 points & 10 brainliest answers)

-ace (needs at least 3,000 points & 15 brainliest answers)

-genius   (needs at least 15,000 points & 50 brainliest answers)

how to award brainliest:

you must wait until 2 people answer to award brainliest. i'm pretty sure that it should be next to the "" and "comments" buttons.  

to be honest i don't know but i need points so