50 dimes is 5 dollars. 5 times $1.50 has to be more than 5. Can’t be B.
70 nickles is less than 50 dimes, which was too little. Can’t be C.
90 pennies can’t even make 1 dollar. Can’t be D.
Must be A.
Elimination is too much. Just take off the zero. 3 quarters is 75-cents so 30 is $7.50. 4 times $1.50 is $6.00 plus $1.50 is $7.50.
At least that’s what I did in my head.