3 the sum of two numbers is 75 and their difference is 20


3. The sum of two numbers is 75 and their difference is 20. Find the difference of their squares.

2. A number when divided by 899 gives a remainder 63. What remainder will be obtained by dividing the same number by 29.

1. A man spends 1/5 of his salary on food, 1/10 of his salary on house rent and 3/5 of his salary on clothes. He still has $18000 left with him. Find his salary.

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Mathematics: 3 the sum of two numbers is 75 and their difference is 20
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