How do I do this?
Mark has 150 coins, all nickels and dimes. He has 12 more dimes than nickels, how man nickels and how many dimes does he have?

Question

How do I do this?
Mark has 150 coins, all nickels and dimes. He has 12 more dimes than nickels, how man nickels and how many dimes does he have?

skullpatrol · Answer

You need a plan for solving a word problem.

skullpatrol · Answer

Step 1. Read the problem carefully. Decide what unknown numbers are asked for and what facts are known.

skullpatrol · Answer

Any ideas?  what unknown numbers are asked for and what facts are known.

skullpatrol · Answer

what unknown numbers are asked for:
 how many nickels and how many dimes does he have?

skullpatrol · Answer

what facts are known.
Mark has 150 coins, all nickels and dimes. He has 12 more dimes than nickels

skullpatrol · Answer

Ready for step 2?

skullpatrol · Answer

Step 2. Choose a variable and use it with the given facts to represent the unknowns described in the problem.

anonymous · Answer

n + d = 150

skullpatrol · Answer

Yes, that is true, but it is step 3 in this plan for solving a word problem.

skullpatrol · Answer

We are still on step 2

skullpatrol · Answer

Let the number of dimes =d
 and the number of nickels=n

skullpatrol · Answer

He has 12 more dimes than nickels

skullpatrol · Answer

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skullpatrol · Answer

Let n= number of nickels
then d= n +12