Al fotocopiar una credencial, primero se amplia al triple y posteriormente la copia resultante se reduce a la mitad. ¿Cual es el
efecto final respecto a la credencial original? Si al credencias es un rectángulo de 10 por 6 cm. ¿Que área tendrá en la primera fotocopia?¿Y en la segunda?
Using google translate: When photocopying a credential, it is first enlarged to triple and subsequently the resulting copy is halved. What is the final effect on the original credential? If the credentials is a rectangle of 10 by 6 cm. What area will you have in the first photocopy? And in the second?
Original: 10 by 6 cm ; Area = length * width = 10 x 6 = 60 cm²
first copy: enlarged to triple 10 x 3 = 30 6 x 3 = 18 30 x 18 = 540 cm²
second copy: halved 30 x 1/2 = 15 18 x 1/2 = 9 15 x 9 = 135 cm²
