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If the angle of elevation of the Sun is ...

If the angle of elevation of the Sun is `30^@`, then the length of the shadow of a vertical pole of length h metre is?

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Total distance = 1080 kilometres, past velocity = 180km/h.
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CALCUTTA BOOK HOUSE-LINEAR EQUATIONS IN REAL PROBLEMS-EXERCISE-5
  1. Sum of the numerator and the denominator of a fraction is 13. If 4 is ...

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  2. A man travels a distance in 3 hours with a uniform velocity . If the d...

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  3. If the length of a a rectangular park be increased by 2 metres and the...

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  4. If 2 is subtracted from the numerator and 3 is added to the denominato...

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  5. The sum of the present ages of a mother and her daughter is 55 years. ...

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  6. A number of two digits is 3 more than 4 times of the sum of its digits...

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  7. 5 times of the greater one of two numbers is 2 more than 8 times of th...

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  8. If 2 is added to both the numerator and the denominator of a fraction ...

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  9. The total price of 9 horses and 7 cows is Rs. 3000 and at the same rat...

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  10. A person travels by boat 5 kilometres in 1 hour in still water. The ti...

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  11. Determine a number of three digits such that if the digits of it be re...

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  12. A student starting from his house walks at a speed 2(1)/(2) km/hour ...

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  13. Total price of 3 pens and 4 pencils is Rs. 37. Again , total price of ...

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  14. 2 men and 6 boys together can do a piece of work in 5 days . 8 men and...

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  15. A boat travels up stream 30 kilometres and down -stream 44 kilometres ...

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  16. Two men 8(1)/(4) kilometres apart, start to walk at the same time . I...

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  17. If a man sells 7 horse and buys 9 cows his purchase increases by Rs. 1...

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  18. A boy was asked to add 3 to a certain number and to divide the sum by ...

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  19. You can spend only Rs. 16 for witnessing football matches . You can wi...

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  20. If the angle of elevation of the Sun is 30^@, then the length of the s...

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