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Abdulrasheed
19:34:pm On August 25 2017

let s be stearing wheel t be tyre c be car c + s = 20 ............eqn 1 c + 2t =70 ............eqn 2 c + t + s = 50 ..........eqn 3 2c + 2t = 80 or c + t = 40 .........eqn 4 3t + s = ? solving eqn 2&4 c = 10, t= 30 put c= 10 in eqn 1 s= 10 therefore, 3t + s = 3x30 + 10 = 90 + 10 = 100 ans.

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EDIDIONG
18:23:pm On August 25 2017

100....(08025018778)

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everlyready
18:11:pm On August 25 2017

100...(mtn-08100577482)

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Emma Ugochukwu
17:43:pm On August 25 2017

the correct answer is 100. Mtn 08162132190

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CHICHARLES
17:39:pm On August 25 2017

100. 07068112728

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eddyarchi
17:20:pm On August 25 2017

Answer is 100, 08058812271(Glo)

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