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प्रश्न
Find a number which when multiplied by 5 is increased by 80.
उत्तर
Let the required number be x.
According to the question:
or, 5x = x + 80
or, 5x − x = 80 [Transposing x to the L.H.S.]
or, 4x = 80
or, `(4x)/4=80/4` [Dividing both the sides by 4]
or, x = 20
Thus, the required number is 20.
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संबंधित प्रश्न
Use the given algebraic expression to complete the table of number patterns.
| S. No |
Expression |
Terms | |||||||||
| 1st | 2nd | 3rd | 4th | 5th | ... | 10th | ... | 100th | ... | ||
| 1 | 2n - 1 | 1 | 3 | 5 | 7 | 9 | - | 19 | - | - | - |
| 2 | 3n + 2 | 5 | 8 | 11 | 14 | - | - | - | - | - | - |
| 3 | 4n + 1 | 5 | 9 | 13 | 17 | - | - | - | - | - | - |
| 4 | 7n + 20 | 27 | 34 | 41 | 48 | - | - | - | - | - | - |
| 5 | n2 + 1 | 2 | 5 | 10 | 17 | - | - | - | - | 10001 | - |
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