Kamila had 2kg of meat. she used 3/10 of it to cook curry and 1/2 of the remainder to cook soup
a) how much meat did she use to cook curry? give your answer in kilograms.
b) how many grams of meat had she left

We will work in grams to eliminate decimals
First, find out what the 3/10 is
2000g / 10 = 200g
200g x 3 = 600g for curry
600g / 1000 = 0.6kg for curry

Work out how much is left over
2000g - 600g = 1400g
Work out how much was used for the soup
1400g / 2 = 700g for soup

Work out many grams are remaining
2000g - 600g - 700g = 700g

A) 0.6kg
B)700g