How to find the speed of first train if the ratio between the speeds of two trains is 7 : 8 and ...?

Course : CA Foundation

Topic : Ratio

 

Learning Objective:

  • How to solve word problem relating to ratios and speed?

Concepts:

  • A ratio is a comparison of the sizes of two or more quantities of the same kind by division.

  • Both the terms of a ratio can be multiplied or divided by the same non-zero number.

  • Usually a ratio is expressed in lowest terms.

  • The order of the terms in a ratio is important.

  • Ratio exists only between quantities of the same kind. Quantities to be compared must be in same units.

  • To compare two ratios, convert them into equivalent like fractions.

 

Exercise 1(A):

Question 25:

The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 kms. in 5 hours, the speed of first train is?

  • Option (A) : 10 Km/hr

  • Option (B) : 50 Km/hr

  • Option (C) : 70 Km/hr

  • Option (D) : None of these

Video Solution:


How to find the speed of first train if the ratio between the speeds of two trains is 7 : 8 and ...?


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