Combining normal random variables

A company produces and sells homemade candles and accessories. Their customers commonly order a large candle and a matching candle stand. The weights of these candles have a mean of $500\,\text{g}$500, start text, g, end text and a standard deviation of $15\,\text{g}$15, start text, g, end text. The weights of the candle stands have a mean of $200\,\text{g}$200, start text, g, end text and a standard deviation of $8\,\text{g}$8, start text, g, end text. Both distributions are approximately normal.

Let $T=$T, equals the total weight of a randomly selected candle and a randomly selected stand, and assume that the two weights are independent.

If the total weight $T$T of the two items exceeds $717\,\text{g}$717, start text, g, end text, the company has to pay for additional shipping.

$P(T>717)\approx$P, left parenthesis, T, is greater than, 717, right parenthesis, approximately equals