Factorise a)2x+8 b)3x-12 c)6x+4 d) 18x-9
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Answer:
Dave worked 60 hours.
Step-by-step explanation:
Let's assume that Dave worked a total of hours.
Since Kate worked 5 hours less than Dave:
And Sarah worked 10 more hours than Dave:
Combined, the three siblings worked 185 hours.
Dave worked 60 hours,
Kate worked 55 hours and Sarah worked 70 hours.
To check:
55 + 60 + 70 = 185 hours