Question

Jake attends his maths class for $45$ minutes and $32$ seconds in $1$ day. For how much time will he attend maths class in $7$ days $?$

• A. $4$ hours $18$ minutes $34$ seconds
• B. $4$ hours $18$ minutes $44$ seconds
• C. $5$ hours $28$ minutes $34$ seconds
• D. $5$ hours $18$ minutes $44$ seconds

Answer 1

The correct option is D $5$ hours $18$ minutes $44$ seconds

Jake attended his maths class for $45$ minutes and $32$ seconds in $1$ day.
Therefore, time spent by him in maths class for $7$ days $=$

As $1$ minute $=60$ seconds,
So, on dividing 224 seconds in 60,

$\therefore 315\text{minutes}224\text{seconds}=315\text{min}+[3\text{min}+44\text{sec}]=318\text{min}44\text{sec}$

$\because 1\text{hour}=60\text{minutes}$,
Therefore, we divide 318 minutes further.

$318\text{minutes}+44\text{seconds}=[5$ hours $18$ minutes$]+44$ seconds

Therefore, time spent by Jake in maths class for $7$ days $=5$ hours $18$ minutes $44$ seconds.