The clock in Sri's car gains time at a constant rate

MATHEMATICS · Numerical · CBSE · Mathematics · Proportional Reasoning · Proportional Reasoning

Problem

The clock in Sri's car gains time at a constant rate. One day, as he begins shopping, his car clock and accurate watch both show

12{:}00

noon. When he is done shopping, his watch shows

12{:}30

and his car clock shows

12{:}35

. Later that day, Sri loses his watch. His car clock shows

7{:}00

. What is the actual time?