exam Maths Puzzle Numerical Ability

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solve for t: s= v1t + v2t over 2
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exam Other Question

The amount of annual interest earned by $8,000 invested at a certain rate is $200 less than $12000 would earn at a rate 1% lower . At what rate is the $8000 invested? the units digit of a two-digit number is 3 less than its tens digit. if the number is divided by the sum of its digit, the quotient is 6 and the remainder is 8. find the number?