Home
Class 7
MATHS
Raj and Vinay are participating in the "...

Raj and Vinay are participating in the "Tree Plantation Drive". Raj plants `30%` of the plants and then Vinay came and planned 117 plants. If `25%` of the plants are still to be planted, find the total number of plants that were to be planted.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem step by step, we need to find the total number of plants that were to be planted, given that Raj planted 30% of the total plants, Vinay planted 117 plants, and 25% of the plants are still to be planted. ### Step 1: Define the total number of plants Let the total number of plants to be planted be denoted as \( X \). ### Step 2: Calculate the percentage of plants already planted Raj planted 30% of the total plants, which can be expressed as: \[ \text{Plants planted by Raj} = \frac{30}{100} \times X = 0.3X \] Vinay planted 117 plants. ### Step 3: Calculate the total number of plants planted so far The total number of plants that have been planted by both Raj and Vinay is: \[ \text{Total plants planted} = 0.3X + 117 \] ### Step 4: Determine the percentage of plants still to be planted According to the problem, 25% of the plants are still to be planted. Therefore, the percentage of plants that have already been planted is: \[ 100\% - 25\% = 75\% \] This means that the total number of plants planted is 75% of \( X \): \[ \text{Total plants planted} = \frac{75}{100} \times X = 0.75X \] ### Step 5: Set up the equation Now, we can set up the equation based on the total plants planted: \[ 0.3X + 117 = 0.75X \] ### Step 6: Solve for \( X \) To solve for \( X \), we will rearrange the equation: \[ 117 = 0.75X - 0.3X \] \[ 117 = 0.45X \] Now, divide both sides by 0.45 to find \( X \): \[ X = \frac{117}{0.45} \] ### Step 7: Calculate \( X \) Calculating \( \frac{117}{0.45} \): \[ X = 117 \times \frac{100}{45} = 117 \times \frac{20}{9} = \frac{2340}{9} = 260 \] ### Conclusion The total number of plants that were to be planted is \( \boxed{260} \). ---
Promotional Banner

Topper's Solved these Questions

  • PERCENTAGE, PROFIT AND LOSS

    ICSE|Exercise TRY THIS!|30 Videos
  • PERCENTAGE, PROFIT AND LOSS

    ICSE|Exercise CHALLENGE!|1 Videos
  • PERCENTAGE

    ICSE|Exercise EXERCISE 9C|26 Videos
  • PERIMETER AND AREA

    ICSE|Exercise TRY THIS |41 Videos

Similar Questions

Explore conceptually related problems

A nursery has 5000 plants. 5% of the plants are roses and 1% are mango plants. What is the total number of other plants?

A nursery has 5000 plants. 10% of these plants are roses and 35% are daisies. What is the total number of other plants?

Number of essential elements in plants is

A nursery has 6500 plants. 15% of these plants are roses and 32% are daisies. What is the total number of other plants in the nursery?

Ancestors of land plants/bryophytes were

One of the commonly used plant growth hormone in tea plantations is

One of the commonly used plant growth hormone in tea plantations is

2025 plants are to be planted in a garden in such a way that each row contains as many plants as the number of rows. Find the number of rows and the number of plants in each row.

In early times, which types of plants were classified ?

In plant A, 2n = 12 and in plant B, 2n =. 16. Then the ploidy number of cross breeding plant is

ICSE-PERCENTAGE, PROFIT AND LOSS-REVISION EXERCISE
  1. Raj and Vinay are participating in the "Tree Plantation Drive". Raj pl...

    Text Solution

    |

  2. Write as percentages. a.(3)/(20) b.(7)/(8) c.(4)/(25) d. (2)/(125) e...

    Text Solution

    |

  3. Write the ratio as percentage: 2:3:5

    Text Solution

    |

  4. Convert the following percentages into fractions. a. 17.5% b.65% c. ...

    Text Solution

    |

  5. Convert the following percentages into decimals. a. 3.5% b. 22% c. 2...

    Text Solution

    |

  6. Find a. 15% of 7500g b. 12% of Rs 240 c. 8% of 120 km

    Text Solution

    |

  7. Find the value of a if: a. 1% of a=7 b. 100% of a=100 c. 12% of a=18...

    Text Solution

    |

  8. What percentage of a. 40 m is 10 m ? b. 7 litres is 1.4 litres?

    Text Solution

    |

  9. If Rs 60 is reduced by 20% , find the decreased amount.

    Text Solution

    |

  10. The population of a town increases 10% annually. If the present popula...

    Text Solution

    |

  11. Anita has obtained 450 marks in an examination. If she obtained 75% of...

    Text Solution

    |

  12. A nursery has 5000 plants. 10% of these plants are roses and 35% are d...

    Text Solution

    |

  13. An ally of tin and copper consists of 24 parts of tin and 136 parts of...

    Text Solution

    |

  14. In an examination, 15% students failed and 425 students passed. Find t...

    Text Solution

    |

  15. In a box of electric bulbs, 12% are defective. If 176 bulbs are good, ...

    Text Solution

    |

  16. A box contains 140 sweets. These sweets are divided amongst Rahul, Pra...

    Text Solution

    |

  17. An IPL cricket team won 7 matches this year as against 10 matches last...

    Text Solution

    |

  18. What will be the cost price of an item if it is sold for Rs 187 after ...

    Text Solution

    |

  19. Rohit's salary was increased by 10% to Rs 41,800. Find his salary befo...

    Text Solution

    |

  20. A book was bought for Rs 560 and sold for Rs 630. Find the gain and ga...

    Text Solution

    |

  21. Find the sale price of a table for which the cost price is Rs 650 and ...

    Text Solution

    |