book Maths Puzzle Numerical Ability

I am a two digit number. My ones and tens digits are the same. The sum of my digits is 8. What number am I?

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book Other Question

Flags Inc finds that the cost to make x flags is: C=19x + 10135, while the revenue produced from them is R=37x. What is the smallest number of flags, x, that must be sold in order to make a profit? Find two consecutive integers such that the sum of 2 times the first integer and 4 times second integer is 46.