You need to try maybe multiplying 40 by 3 or dividing it if there is supposed to be a left over number then your fine but it should be 120 or something else sorry if I got you wrong bye
In order to have 4 kg, he must have 20/5 kg. Each bag is 2/5 kg, so 2/5 times 10 is 20/5 or 4kg. Therefore, he bought 10 bags of tangerines for the school party.
