£210
as 30% less is 70% off your original value
the decimal of 70% is 0.7
so 300*0.7=£210
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30 percent off of 3 pound = £2.130% off of 3 pound= 30% discount applied to £3= £3 - (30% * £3)= £3 - (0.30 * £3)= £3 - £0.90= £2.1
.30 x 37 = 11.1 pounds off
300%= 10% of 30= 10%/100% * 30= 0.1 * 30= 3percentage of 3 = 3 * 100% = 300%
42.8571
300