Last Year Boris paid £256 for his car insurance This year he has to pay £894 for his car insurance Work out the percentage increase in the cost of his car insurance

%∆C = 249.22%

the percentage increase in the cost of his car insurance is 249.22%

Step-by-step explanation:

Given;

Cost of car insurance last year C1 = £256

Cost of car insurance this year C2 = £894

Percentage increase = change in cost/initial cost × 100%

%∆C = ∆C/C1 × 100%

%∆C = (C2-C1)/C1 × 100%

Substituting the given values;

%∆C = (894-256)/256 × 100%

%∆C = 249.21875%

%∆C = 249.22%

the percentage increase in the cost of his car insurance is 249.22%

step-by-step explanation:

in the absence of parentheses, i will have to make some assumptions:   i interpret your (3x+5/y^6)(4y^3/5)​ to mean:

3x + 5     4y^(3/5)       (3x + 5)(4)

* =

    y^6             1               y^(6-3/5)

if this is not what you expected, repost your question using parentheses to indicate whether you meant

4y^3

    or   4y^(3/5)

    5