Aptitude Discussion

Q. |
One quantity of wheat at Rs 9.30 per Kg is mixed with another quality at a certain rate in the ratio 8:7. If the mixture so formed be worth Rs 10 per Kg, what is the rate per Kg of the second quality of wheat? |

✖ A. |
Rs. 12.47 |

✔ B. |
Rs. 10.80 |

✖ C. |
Rs. 15.17 |

✖ D. |
Rs. 47.66 |

**Solution:**

Option(**B**) is correct

Let the rate of second quality be Rs x per Kg.

C.P of 1Kg wheat of 1st kind = 930p

C.P of 1 Kg wheat of 2nd kind = 100x p

Mean price = 1000p

By rule of alligation we have required ratio 8 : 7

930 x

\ /

(Mean Price)

(10)

/ \

x-10 : 0.7 :: 8 : 7

So we get required ratio, (x-10) : 0.7 :: 8 : 7

⇒ x = **10.80 per Kg**

**Sarvare**

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