Welcome to Westonci.ca, your ultimate destination for finding answers to a wide range of questions from experts. Join our platform to connect with experts ready to provide accurate answers to your questions in various fields. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform.

10 coins are four times the number of [tex]₹ 5[/tex] coins, eight times the number of [tex]₹ 2[/tex] coins, and sixteen times the number of [tex]₹ 1[/tex] coins. If all the money in the money box adds up to [tex]₹ 555[/tex], find the number of [tex]₹ 10[/tex] coins in it.

Hint: Let the number of [tex]₹ 10[/tex] coins be [tex]x[/tex]. Then, [tex]10x + 5\left(\frac{x}{4}\right) + 2\left(\frac{x}{8}\right) + 1\left(\frac{x}{16}\right) = 555[/tex].


Sagot :

To solve this problem, let's follow the given hint. We'll set up and solve the equation step by step.

1. Define the Variables:
Let the number of ₹ 10 coins be [tex]\( x \)[/tex].

2. Relationships Between Coins:
- The number of ₹ 5 coins is [tex]\( \frac{x}{4} \)[/tex].
- The number of ₹ 2 coins is [tex]\( \frac{x}{8} \)[/tex].
- The number of ₹ 1 coins is [tex]\( \frac{x}{16} \)[/tex].

3. Total Value of the Coins:
The total monetary value of the coins can be expressed as:
- Value from ₹ 10 coins: [tex]\( 10x \)[/tex]
- Value from ₹ 5 coins: [tex]\( 5 \times \frac{x}{4} \)[/tex]
- Value from ₹ 2 coins: [tex]\( 2 \times \frac{x}{8} \)[/tex]
- Value from ₹ 1 coins: [tex]\( 1 \times \frac{x}{16} \)[/tex]

4. Set Up the Equation:
According to the problem, the sum of the values of all the coins is ₹ 555. Therefore, the equation is:
[tex]\[ 10x + 5\left(\frac{x}{4}\right) + 2\left(\frac{x}{8}\right) + 1\left(\frac{x}{16}\right) = 555 \][/tex]

5. Simplify the Equation:
Let's simplify each term:
[tex]\[ 10x + \frac{5x}{4} + \frac{2x}{8} + \frac{x}{16} \][/tex]
Combine the terms by converting everything to have a common denominator of 16:
[tex]\[ 10x = \frac{160x}{16} \][/tex]
[tex]\[ 5 \left( \frac{x}{4} \right) = \frac{5x}{4} = \frac{20x}{16} \][/tex]
[tex]\[ 2 \left( \frac{x}{8} \right) = \frac{2x}{8} = \frac{4x}{16} \][/tex]
[tex]\[ 1 \left( \frac{x}{16} \right) = \frac{x}{16} \][/tex]
Now add these fractions:
[tex]\[ \frac{160x}{16} + \frac{20x}{16} + \frac{4x}{16} + \frac{x}{16} = 555 \][/tex]
Combining the numerators:
[tex]\[ \frac{160x + 20x + 4x + x}{16} = 555 \][/tex]
[tex]\[ \frac{185x}{16} = 555 \][/tex]

6. Solve for [tex]\( x \)[/tex]:
Isolate [tex]\( x \)[/tex] by multiplying both sides of the equation by 16:
[tex]\[ 185x = 555 \times 16 \][/tex]
[tex]\[ 185x = 8880 \][/tex]
Divide both sides by 185:
[tex]\[ x = \frac{8880}{185} \][/tex]
[tex]\[ x = 48 \][/tex]

Thus, the number of ₹ 10 coins is [tex]\( \boxed{48} \)[/tex].
Thank you for your visit. We're committed to providing you with the best information available. Return anytime for more. We appreciate your time. Please revisit us for more reliable answers to any questions you may have. Find reliable answers at Westonci.ca. Visit us again for the latest updates and expert advice.