El sueldo de Jorge tendría que aumentar en un 25% para ser igual al sueldo de Martín. ¿Qué variación debería tener el sueldo de Martín para ser igual al sueldo de Jorge?

u I am sorry I do not know how to read spanish

Step-by-step explanation:

on friday there were 15 birds

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.