Answer:
49
Explanation:
For 10 flapjacks we need a total of 100g of ingredients
therefore, we need to get how many gram for 1 flapjacks
that is, for butter 20÷10=2
for sugar 30÷10=3
for rolled oats 50÷10=5
that's a total of 10.
this means it takes 10g of ingredients to make 1 flapjacks
then 140+150+200=490
490÷10=49
The final answer is 49 flapjacks can be made from the above ingredients