.025 = (25/1000) x 100% = 2.5%
= 70,000.
Let the number of buffaoes be x and number of ducks be y.
Then 4x + 2y = 2(x + y) + 24
=> 2x = 24
=> x = 12.
3/5 of 350 - 4/7 of 210 = 210 - 120 = 90.
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