Simple ratio easy points up for grabs
£320 is divided between colin, dan & david so that colin gets twice as much as dan, and dan gets three times as much as david. how much does dan get?

Colin gets twice as much as Dan

Colin = Dan * 2

Dan gets three times as much as David

Dan = David * 3

Put this is terms of a ratio.

Colin:Dan:David

6:3:1

6 + 3 + 1 = 10

320 / 10 = 32

David = 32 * 1 = £32

Dan = 32 * 3 = £96

Colin = 32 * 6 = 96 * 2 = £192

answer: a

step-by-step explanation:

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225