Question

4 Adeline is A years old.
a Write down an expression for:
i Adeline's age in 10 years' time
ii Adeline's age 6 years ago.
b Write down an equation for A.
(In 10 years time , I shall be twice as Old I was 6 yrs ago )
c Solve the equation to find Adeline's age now

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Answer 1

present age is A

a) after 10 years = A+10 years

before 6 years= A-6 years

b) by conditions

A+10 = 2(A-6)

A +10= 2A-12

10 +12= 2A-A

22=A

his age is 22 years