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प्रश्न
A farmer planted 1890 tomato plants in a field in rows each having 63 plants. A certain type of worm destroyed 18 plants in each row. How many plants did the worm destroy in the whole field?
उत्तर
Total number of plants = Number of rows × Number of plants
⇒ 1890 = Number of rows × 63
⇒ `1890/63` = Number of rows
⇒ Number of rows = 30
Now, number of plants destroyed by worm in 1 row = 18
∴ Total number of plants destroyed by worm in 30 rows = 18 × 30 = 540
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