Mr. Manoj saves 30% of his salary every month. But in April, his expenses increase by 20% of his original expenses and he saves $280 less than the amount he saves normally. What is his salary?
Explanation:
Since, savings is 30%, that means Mr. Manoj’s expenses are 70% of his salary.
Let 'x' be the salary and 0.7x be the expenses.
In April, the expenses increase by 20% and become 1.2 × 0.7x = 0.84x
∴ The savings decrease by 0.84x – 0.7x = 0.14x
⇒ 0.14x = 280
⇒ x = $2000
Hence, option (a).
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