I need help for these 4 questions

1)2/3 of the number of papayas in a fruit shop was equal to 1/5 of the number of apples at the shop.If there were 416 papayas and apples,find the number of papayas at the shop

2)After using 1/12 of its charcoal,a food stall bought another 12kg of charcoal.As a result,the food stall now has 7/6 as much charcoal as what it had at first.How many kilograms of charcoal did thr food stall have at first?

3)Rita,Ann and Susan went shopping together.Rita spent 5/9 of her money.Amy spent 2/3 of hers and Susan spent $7.They all had an equal amount of money left.If the total sum of their money left was $96,whar was the total amount of money the three children had at first?

4)There were twice as many carnations as roses in a flower shop.After selling 65 carnations and 10 roses,there were 3 times as many carnations left in the shop.How many roses were there in the shop at first?

Source: Raffles Girls’ Primary