Which strategy can be used to solve this problem?

marta has 5 more dimes than quarters. she has twice as many nickels as quarters. marta has $2.00 in dimes.

how much money does marta have altogether?

a.
draw a diagram

draw 3 large squares. in the first square draw 20 small circles and write 10 inside each circle. in the second square draw 2 circles. write 5 inside each circle. in the third square draw 5 larger circles. write 25 inside each. add up the amounts inside all the circles.

b.
guess and test.

guess that marta has 10 quarters. subtract 5 to find the number of dimes (5). ask if 5 dimes equals $2.00. if not, revise the number of quarters. repeat the process until the dimes equal $2.00. use the number of quarters to calculate the amount of money marta has in quarters.

c.
work backward.

start with finding out the number of dimes marta has (20). subtract 5 to find the number of quarters (15). multiply 15 by 2 to find the number of nickels (30). calculate the dollar amounts for nickels and quarters and add this amount to $2.00.