Referring to the hot price list, the approximate calories of chicken breast 150g, an egg, a medium-sized apple and two tomatoes are calculated as follows.

150g chicken× 6.99 =1048.5kj.

An egg is 50g× 7.11= 355.5kj.

An apple150g×× 2.43 = 364.5kj.

The calorie of tomatoes is 100g/15 (kcal).

300 grams of two tomatoes contain 45 kilocalories.

1048.5+355.5+364.5 = 1768.5 kj

1 kcal =4. 186 kj.

So 1768.5kJ ÷ 4. 186kJ.

= 422.48 kcal

422.48+45 = 467.48 kcal

The answer is 467.48 kcal.

An adult weighing 50 kilograms needs about 5000 kilocalories a day, which is very small as a meal and can lose weight.