19.99% of 449 + 24.88% of (199 + ?) =210.22

19.99% of 449 + 24.88% of (199 + ?) =210.22

19.99% of 449 + 24.88% of (199 + ?) =210.22

a)            190

b)            215

c)            175

d)            280

e)            110

Sol:

19.99% of 449 + 24.88% of (199 + ?) = 210.22

20 * 450 ÷ 100 + 25 * (200 + ?) ÷ 100= 210

90 + (200 + ?) ÷ 4 = 210

(200 + ?) = 120 * 4

200 + ? = 480

? = 280

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