1.

16 \frac 2 3 \% \text of 600 g m - 33 \frac 1 3 \%

Answer»

a)28% of 450 +45% of 280=(28/100)×450 +(45/100)×280=126+126=252

b)16(2/3)% of 600 gm -33(1/3)% of 180 gm=100-60=40



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