help help help :(( tysm if u do !

Answer:
B. L(1-0.15)
Step-by-step explanation:
15 % = [tex]\frac{15}{100}[/tex]
L = Landen's time at the beach
Since Mateo spent 15% less => L - 15% of L => [tex]L - L*\frac{15}{100}[/tex] =>[tex]L (1 - 0.15)[/tex]