A trader in country where their currency 'MONI'(M) is in base five bought 1035 oranges...

JAMB 1984

A trader in country where their currency 'MONI'(M) is in base five bought 103₅ oranges at M14₅ each. If he sold the oranges at M24₅ each, what will be his gain?

A. 103₅
B. 1030₅
C. 102₅
D. 2002₅
E. 3032₅

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Correct Answer: Option B

Explanation

Total cost of 103₅ oranges at N14₅ each

= 103₅ x 14₅

= 2002₅

Total selling price at N24₅ each

= (103)₅ x 24₅

= 3032₅

Hence his gain = 3032₅ - 2002₅

= 1030₅

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