### Discussion :: Arithmetic Reasoning - Section 1 (Q.No.6)

Harshita said: (Jan 19, 2012) | |

Anyone can explain it properly.............. |

Surya said: (Mar 22, 2012) | |

I can explain it properly. The total spend amount is 38. So clearly shows here when purchase 4 pineapples at the rate. Rs 7 we get total amount 28. Purchase 2 watermelons at the rate rs 5 we get total amount rs 10. So 28+10=38. You cannot purchase 3 pineapples. So 3*7=21/ 38-21=17. Rs17 it is not sufficient amount for purchase of watermelons. |

Pardhu said: (Oct 22, 2014) | |

If you think logically. Watermelon each one price is Rs == 5 (always round figure like 5*2 = 10, 5*3 = 15). Total spent amount = 38 Rs. Last digit of the total amount is 8 (above 5 table is not matching). By observation like (7*2 = 14, 7*3 = 21, 7*4 = 28). That means 7*4+5*2 = 38 In this manner explanation is length. Just thinking is short. |

Arya said: (Nov 14, 2014) | |

We know the pineapples cost 7 rs each and watermelon 5 rs. Now the normal approach would be to form a quadratic equation. 7x + 5y = 38. Since we have two unknowns and one equation, we need to solve this by TRIAL AND ERROR. Substitute the value of x with every option. For example when x = 2. 14 + 5y = 38. 5y = 24. y = 24/5 which is a decimal number and hence x = 2 can't be a solution. Same case for x = 3. The only option that satisfies the equation x = 4 which gives why = 2. Hence C is the correct answer. |

Anonymous said: (Dec 2, 2014) | |

If x is for pineapple, and y is for watermelon. Then, 7x+5y = 38. we are asked to get number of pineapples, which is x and not y. Hence, x = (38-5y)/7. To achieve a whole number value for pineapple, 38-5y must be divisible by 7. i.e If 38-5y = 28; y = 2; and x = ? No of pineapples = 4 |

M Dharma Raju said: (Dec 7, 2014) | |

"x" spent for pineapple and watermelon = Rs.38. Cost of pineapple = Rs.7. Cost of watermelon = Rs.5. The question is how many pineapples you can purchase ? Firstly multiply 38 by 7. The remainder will be 10. According to the question we can purchase 4 pineapples and the balance amount rs 10. We will purchase 02 no of watermelon clearly. This is by with out handling the pen only by mind and quickly answer. |

Ishan Gupta said: (Sep 7, 2015) | |

I can do this by the method of linear equations in two variable. |

Bob said: (Feb 19, 2016) | |

What does Rs stand for? |

Dns said: (May 9, 2016) | |

@Bob. Rs - Rupees. |

Niro said: (Jun 29, 2016) | |

7 + 7 + 7 + 7 = 28. 5 + 5 = 10. 28 + 10 = 38. |

Siba Nahk said: (Aug 2, 2016) | |

Thanks for giving the detailed solution. |

Jothsna said: (Aug 29, 2016) | |

Simple logic: Here pine apple cost = 7. Watermelon = 5. Total = 38. Then 7 * 4 = 28(pineapple) Watermelon = 5 * 2 = 10. Now 28 + 10 = 38. No of pineapples = 7. |

T L Naidu said: (Sep 26, 2016) | |

Simple logic first sees option there asked pineapple so, 4 * 7 = 28, 2 * 5 = 10. |

Pavan Pj said: (Dec 27, 2016) | |

One pineapple 7rs. Watermelon costs Rs. 5. Total 38. See the choose below, if you buy 2 it became 14rs remaining 24 is not multiples of 5, 3 it became 21, remaining 17 is not multiply of 5. Then the answer is c 7 x 4 = 28 and 5 + 5 = 10 total 38. |

Shubham Tiwary said: (Feb 1, 2017) | |

@All. You can't solve like that because you have got two variables and only one equation. |

Tauseef Ahmad said: (Jun 30, 2018) | |

The easiest method is; 7*4=28, 5*2=10, Total 38, So answer is 4. |

Siri said: (Jan 5, 2019) | |

Very clear, Thanks for the answer @Dharma Raju. |

Kuldeep Singh said: (Aug 15, 2019) | |

The easiest method is; 38-07 =31, 38-14=24, 38-21=17, 38-28=10, 38-35=03, Only no.10 divisble on 5;10+28. So, the Correct answer is 4. |

Miro said: (Aug 19, 2019) | |

Perfect, thanks @Niro. |

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