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Divide 13,680 in three parts such that 1stpart is 3/5thof the third part and the ratio between 2nd and 3rdpart is 4 : 7. How much is the first part?
- A3780
- B6300
- C3600
- D4800
Answer not set
Discussion 1
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CCommunity
Let the 3rd part be ‘x’.
⇒ 1st part = 3x/5
⇒ 2nd part = 4x/7
13680 = (3x/5) + (4x/7) + x
⇒ 13680 = 76x/35
⇒ x = 6300
1st part = 3 × 6300/5 = 3780
∴ The first part = 3780
⇒ 1st part = 3x/5
⇒ 2nd part = 4x/7
13680 = (3x/5) + (4x/7) + x
⇒ 13680 = 76x/35
⇒ x = 6300
1st part = 3 × 6300/5 = 3780
∴ The first part = 3780