7. rubí por el dia de su cumpleaños recibe s/. 200 de
propina, gasta el 30 % en un polo y luego gasta el
50 % de lo que le queda en un pantalón, ¿cuánto
dinero aún le queda?
a) s/. 70
d) 20
b) 60
e) 120 c) 40
ayudame es para hoy día por favor

Nick estimated that 5/8+4/7 is about 2.explain how you know his estimate is not reasonable plz and fast i will give 50 points

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

2.5 milligrams is equivalent to how many grams