Prawns and carbs

I buy 3 1/4 kg of prawns and 4 2/5 kg of carbs. 1 kg of prawns is RM 24 and 1 kg of carbs is RM 10. If I pay RM 50, what is my change?

Final Answer:

x =  -72

Step-by-step explanation:

m1=341=3+41=43 4+1=412+1=413=341=3.25 kg m2=452=4+52=54 5+2=520+2=522=452=4.4 kg  p1=24 RM/kg p2=10 RM/kg  p=m1 p1+m2 p2=413 24+522 10=122 RM  x=50p=50122=72



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