Se construyó una alberca de 20 m de largo por 12 metros de ancho y alrededor de ella quiere instalar azulejo antiderrapante si la superficie del azulejo debe ser de 144 metros cuadrados ¿qué ancho debe tener la superficie azulejo?

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers