Question # A person goes to his office from his home daily at a fixed speed. But today he decided to reduce his speed by ( 20 % ) as a result he reaches his office 16 minute late. What's the actual/original time he takes to reach his office daily?

# A person goes to his office from his home daily at a fixed speed. But today he decided to reduce his speed by ( 20 % ) as a result he reaches his office 16 minute late. What's the actual/original time he takes to reach his office daily?

(1) 20 minutes

(2) 30 minutes

(3) 64 minutes

(4) 40 minutes

Solution

Original speed ( =v ), time ( =T ) distance ( =U T ); New speed ( =frac{80 v}{100}=8 / 10^{u} ) ( V T=frac{8}{10} v(T+16) ) Option (3)