A salesman travels a distance of 70 miles in 2.5 hours. How much faster, in miles per hour, must he travel to make the same trip in 0.75 hours less than the original time?

A 28
B 24
C 12
D none of these

Correct Answer: 12

১ম ক্ষেত্রে, গতি = <math xmlns = "http://www.w3.org/1998/Math/MathML"><mfrac><mrow><mn>70</mn><mo>&#xA0;</mo></mrow><mrow><mn>2</mn><mo>.</mo><mn>5</mn></mrow></mfrac><mo>&#xA0;</mo></math>m/hr = 28m/hr ২য় ক্ষেত্রে, গতি = <math xmlns = "http://www.w3.org/1998/Math/MathML"><mfrac><mrow><mn>70</mn><mo>&#xA0;</mo></mrow><mrow><mn>2</mn><mo>.</mo><mn>5</mn><mo>&#xA0;</mo><mo> - </mo><mo>&#xA0;</mo><mn>0</mn><mo>.</mo><mn>75</mn></mrow></mfrac></math> m/hr = 40m/hr <math xmlns = "http://www.w3.org/1998/Math/MathML"><mo>&#x2234;</mo></math> গতি বাড়াতে হবে = (40–28) m/hr = 12m/hr
Bissoy MCQ
#গণিত #ঐকিক নিয়ম (Unitary method) #Dutch-Bangla Bank Ltd #Dutch-Bangla Bank Ltd - Probationary Officer - 14.08.2015

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