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This is a Matrix question. 

  Spent Left  Total
John 12u  1u + 2.5  13u + 2.5
Rahim 4u 4u + 10   8u + 10
Total     21u + 12.5

21u + 12.5 = 149

21u = 149 – 12.5 = 136.5

1u = 136.5 ÷ 21 = 6.5 

a)

12u = 6.5 × 12 = 78

b)

8u = 8  × 6.5 = 52

52 + 10 = 62

 

1 Reply 0 Likes ✔Accepted Answer

Thank you

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J 4u+4u+4u+u+2.50 (spent 12u, left over u+2.50)

R 4u+4u+10 (spent 4u, left over 4u+10)

21u+12.50=149

u=6.50

a) 12u=$78

b) 8u+10=$62

1 Reply 0 Likes

Thank you

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