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Question

In a huge pile of apples and oranges, both ripe and unripe mixed together, 15% are unripe fruits. Of the unripe fruits, 45% are apples. Of the ripe ones, 66% are oranges. If the pile contains a total of 5692000 fruits, how many of them are apples?

The correct answer is

2029198

Apples Calculation in Mixed Fruit Pile

This problem requires us to find the total number of apples in a large pile containing both apples and oranges, which are categorized as either ripe or unripe. We need to use the given percentages and the total number of fruits to calculate the count of apples from each category and then sum them up.

Total Fruits in the Pile

First, let's identify the total number of fruits given in the pile:

  • Total Fruits = $5,692,000$

Unripe Fruits Analysis

We are informed about the percentage of unripe fruits in the entire pile and then the percentage of apples among these unripe fruits. Let's calculate these amounts:

  • Percentage of Unripe Fruits = $15\%$ of Total Fruits
  • Number of Unripe Fruits = $15\%$ of $5,692,000$
  • Number of Unripe Fruits = $\frac{15}{100} \times 5,692,000 = 15 \times 56,920 = 853,800$

Now, let's find how many of these unripe fruits are apples:

  • Percentage of Apples in Unripe Fruits = $45\%$ of Unripe Fruits
  • Number of Apples (Unripe) = $45\%$ of $853,800$
  • Number of Apples (Unripe) = $\frac{45}{100} \times 853,800 = 45 \times 8,538 = 384,210$

Ripe Fruits Analysis

Next, we will focus on the ripe fruits. We first determine the total number of ripe fruits in the pile, and then calculate the number of apples within this category.

  • Since $15\%$ of fruits are unripe, the remaining percentage must be ripe.
  • Percentage of Ripe Fruits = $100\% - \text{Percentage of Unripe Fruits}$
  • Percentage of Ripe Fruits = $100\% - 15\% = 85\%$ of Total Fruits
  • Number of Ripe Fruits = $85\%$ of $5,692,000$
  • Number of Ripe Fruits = $\frac{85}{100} \times 5,692,000 = 85 \times 56,920 = 4,838,200$

We are given the percentage of oranges among the ripe fruits. Since the pile only contains apples and oranges, we can deduce the percentage of apples in ripe fruits:

  • Percentage of Oranges in Ripe Fruits = $66\%$
  • Percentage of Apples in Ripe Fruits = $100\% - \text{Percentage of Oranges in Ripe Fruits}$
  • Percentage of Apples in Ripe Fruits = $100\% - 66\% = 34\%$ of Ripe Fruits
  • Number of Apples (Ripe) = $34\%$ of $4,838,200$
  • Number of Apples (Ripe) = $\frac{34}{100} \times 4,838,200 = 34 \times 48,382 = 1,644,988$

Total Apples in the Pile

To find the total number of apples in the entire pile, we simply add the number of apples from the unripe category and the number of apples from the ripe category:

  • Total Apples = Number of Apples (Unripe) + Number of Apples (Ripe)
  • Total Apples = $384,210 + 1,644,988 = 2,029,198$

Summary of Fruit Distribution

Here is a detailed breakdown of the fruit distribution based on our calculations:

Category Total Number of Fruits Apples (Number) Oranges (Number)
Total Pile $5,692,000$ $2,029,198$ $3,662,802$
Unripe Fruits $853,800$ ($15\%$ of total) $384,210$ ($45\%$ of unripe) $469,590$ ($55\%$ of unripe)
Ripe Fruits $4,838,200$ ($85\%$ of total) $1,644,988$ ($34\%$ of ripe) $3,193,212$ ($66\%$ of ripe)

Therefore, the total number of apples in the pile is $2,029,198$.

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Important Questions from Numerical Computation

  1. Ratio of the angles of a triangle are 1 : 2 : 6. What is the smallest angle?

  2. It would take one machine 4 hours to complete a production order and another machine 2 hour to complete the same order. If both machines work simultaneously at their respective constant rates, the time taken to complete the same order is ________ hours.

  3. Two design consultants, P and Q, started working from 8 AM for a client. The client budgeted a total of USD 3000 for the consultants. P stopped working when the hour hand moved by 210 degrees on the clock. Q stopped working when the hour hand moved by 240 degrees. P took two tea breaks of 15 minutes each during her shift, but took no lunch break. Q took only one lunch break for 20 minutes, but no tea breaks. The market rate for consultants is USD 200 per hour and breaks are not paid. After paying the consultants, the client shall have USD_remaining in the budget.

  4. What is the value of \(1 + \frac{1}{4} + \frac{1}{{16}} + \frac{1}{{64}} + \frac{1}{{256}} + \ldots ?\)

  5. A 1.5 m tall person is standing at a distance of 3 m from a lamp post. The light from the lamp at the top of the post casts her shadow. The length of the shadow is twice her height. What is the height of the lamp post in meters?

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