What is the solution?

How many grams must be adde to 970g to make 1 and a half kg

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?