alleryएक कार 50 km/h वेगाने 300 km अंतर पार करते. 75 km/h वेगाने त्याच प्रवासाला किती वेळ लागेल:
A3 तास
B4.5 तास
C5 तास
D4 तास
Answer & Solution
Correct answer: D. 4 तास
1. 50 km per hour वेगाने प्रवासाला 300 / 50 = 6 तास लागतात.
2. अंतर बदललेले नाही, त्यामुळे वेग आणि वेळ व्यस्त प्रमाणात आहेत.
3. 75 km per hour वेगाने वेळ 300 / 75 इतका लागेल.
4. म्हणजेच 4 तास.
5. पडताळा म्हणून, वेग 1.5 च्या पटीने वाढला आणि वेळ त्याच पटीने कमी झाला, 6 / 1.5 = 4.
_Source: syllabus Maths, Ch 11 'Direct and Inverse Proportions', S11.3 Inverse Proportion_
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