In a bag , there are 20kg of fruits. If 7 1/6 kg of these fruits be oranges and 8 2/3 kg of these are apples and rest are grapes then find the weight of the grapes in the bag.

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post