An athlete runs 200 metres in 24 seconds. What is her speed in kilometres per hour?

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KPTCL Assistant Exam (Mescom) SLOT1 2017 click here to view all questions

An athlete runs 200 metres in 24 seconds. What is her speed in kilometres per hour?

A30

B15

C8.3

D2.3

rakesh ? Jan 4 '2020 at 10:56

Correct answer is : 30

Explanation:

Speed of athlete,

$= \frac{200 \text{ m}}{24 \text{ secs}}$
$= \frac{200 \times 185}{24}$

$=30 \text{ km}/ \text{hour}$

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At what temperature do both Centigrade and Fahrenheit thermometers show the same reading?

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RRB ASSISTANT LOCO PILOT (Allahabad) 2010 click here to view all questions

At what temperature do both Centigrade and Fahrenheit thermometers show the same reading?

A−20°

B−40°

C42°

D0°

dinesh ? Dec 23 '2019 at 19:56

Correct answer is: −40°

Explanation:

Let F is Fahrenheit and C is Celsius.

The conversion formula is:

$F = C \times \frac{9}{5} + 32$

given that F and C is equal.

so,

$F = F \times \frac{9}{5} +32$

$F- \frac{9F}{5} =32$
$\frac{5F-9F}{5}=32$

$\frac{-4F}{5}=32$

$-4F = 32 \times 5$

$F = - \frac{160}{4}$

$F = -40$

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What is the value of XC (Roman number)?

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RRB TC CC Exam (Mumbai) 2006 click here to view all questions

What is the value of XC (Roman number)?

A100

B40

C110

D90

Akilesh Kharvi ? Nov 12 '2016 at 15:1

Answer is : 90

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Minus 40 degree centigrade is equal to ...... degree fahrenh

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RRB TC CC Exam (Mumbai) 2006 click here to view all questions

Minus 40 degree centigrade is equal to ...... degree fahrenheit.

A104

B122

C−40

Dnone of these

Akilesh Kharvi ? Nov 12 '2016 at 15:0

Answer is : -40

Negative forty degrees is the temperature where the Fahrenheit and Celsius scales correspond with one another (-40°F = -40°C).

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After measuring 120 m of a rope, it was discovered that the

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RRB ASM Exam (Ajmer) 2007 click here to view all questions

After measuring 120 m of a rope, it was discovered that the measuring metre rod was there centimetres longer. The true length of the rope measured is-

A121 m 20 cm

B123 m 60 cm

C123 m

D116 m 40 cm

Nithin K ? Nov 20 '2016 at 19:30

Answer is : 123 m 60 cm

Explanation:

Geven Data,
The length of the rod = 3 cm
To measure 120 m , Rod is apply by 120 times .
Therefore, total length that is measure by longer part = 120 x 3
= 360 cm = 3.60 m (∵ 100cm = 1m)
Then, the actual length of rope = 120m + 3.6m
= 123 m 60 cm
Hence, the answer is 123 m 60 cm.

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