ExamPrepWay
Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Solve this faster with the right shortcut first
- Check units.
- Convert if needed.
- Apply S = D/T, D = S x T, or T = D/S.
Correct Answer: A
Correct Answer: A
Method / Topic: Time Speed Distance
The answer uses consistent units in the speed-distance-time relation.
Short Explanation
Detailed Explanation
Correct Answer: A
Method / Topic: Time Speed Distance
<table cellspacing="0" style="border-collapse:collapse; height:20px; width:85px">
<tbody>
<tr>
<td style="background-color:#c0e6f5; border-bottom:1px solid #44b3e1; border-left:none; border-right:none; border-top:1px solid #44b3e1; height:20px; vertical-align:top; white-space:normal; width:85px"><span style="color:#000000">Two hours fifteen minutes equals 2.25 hours or 9/4 hours. Average speed=180÷(9/4)=180×4/9=80 km/h. Converting minutes correctly is essential; 15 minutes is one-quarter hour. The calculation is checked against the conditions in the
. A useful final check is to substitute the
s involving signs, denominators, amount versus interest, and distance versus speed.</span></td>
</tr>
</tbody>
</table>
See full explanation + shortcut trick
Compare the quick idea with the premium step-by-step explanation and faster solving trick for this pattern.
Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Shortcut used, common trap, and the fastest solving route
- Check units.
- Convert if needed.
- Apply S = D/T, D = S x T, or T = D/S.
A train travels 180 km in 2 hours 15 minutes. Find its average speed.
Explanation
Correct Answer: A
Method / Topic: Time Speed Distance
The answer uses consistent units in the speed-distance-time relation.
Short Explanation
Detailed Explanation
Correct Answer: A
Method / Topic: Time Speed Distance
<table cellspacing="0" style="border-collapse:collapse; height:20px; width:85px">
<tbody>
<tr>
<td style="background-color:#c0e6f5; border-bottom:1px solid #44b3e1; border-left:none; border-right:none; border-top:1px solid #44b3e1; height:20px; vertical-align:top; white-space:normal; width:85px"><span style="color:#000000">Two hours fifteen minutes equals 2.25 hours or 9/4 hours. Average speed=180÷(9/4)=180×4/9=80 km/h. Converting minutes correctly is essential; 15 minutes is one-quarter hour. The calculation is checked against the conditions in the
. A useful final check is to substitute the
s involving signs, denominators, amount versus interest, and distance versus speed.</span></td>
</tr>
</tbody>
</table>
See full explanation + shortcut trick
Use the free answer check first, then unlock the complete breakdown, shortcut path, and richer explanations for similar questions.
Keep Practicing This Pattern
Recommended Next Practice
Use these suggestions after solving the practice questions above.