Question

If during winter season , a particular clock loses $x$ minutes every $y$ hours, then the number of minutes lost by the clock in a week is:

• A. $7xy$
• B. $\frac{5y}{2x}$
• C. $\frac{14y}{5x}$
• D. $\frac{14x}{5y}$

Answer 1

The correct option is D $\frac{14x}{5y}$

Given clock loses $x$ minutes in every $y$ hours.

We know that in one week $=24\times 7=168$ hours

Then, the clock loses in one week =$\frac{168}{60y}\times x=\frac{168x}{60y}=\frac{14x}{5y}$ minutes