If a factory can produce 250 desks in 5 days how many’s desks will it produce in 15 days

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

31/6= 19/6 19/6 *1/7=19/42

Ive seen this before! the answer is b

The answer is : 63explanation 60 times 0.05360+363