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Shraddha wants to buy flowers for her friends. She can buy roses in bunch of 7 flowers and carnations in bunch of 10 flowers. She wants to buy the same number of roses and carnations. What is the minimum number of flowers Shraddha will need to buy?

  • a)
    140

  • b)
    70

  • c)
    130

  • d)
    80

Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Shraddha wants to buy flowers for her friends. She can buy roses in bu...
To find the minimum number of flowers Shraddha needs to buy, we need to find the least common multiple (LCM) of 7 and 10 since she wants to buy the same number of roses and carnations.

Finding the LCM:
To find the LCM of 7 and 10, we need to list the multiples of each number until we find a common multiple.

Multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, ...

Multiples of 10: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ...

From the lists above, we can see that the first common multiple of 7 and 10 is 70. Therefore, the LCM of 7 and 10 is 70.

Calculating the minimum number of flowers:
Since the LCM of 7 and 10 is 70, Shraddha needs to buy 70 flowers of each type (roses and carnations) to have an equal number.

Therefore, the minimum number of flowers Shraddha needs to buy is 70 + 70 = 140.

So, the correct answer is option B) 140.
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Community Answer
Shraddha wants to buy flowers for her friends. She can buy roses in bu...
Why not 70  why 140 give me reason

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