nickels ($0.05): D + 14
dimes ($0.10): D
quarters ($0.25): Q
Quantity: (D + 14) + D + Q = 102 ⇒ 2D + 14 + Q = 102 ⇒ 2D + Q = 88
Value: 0.05(D + 14) + 0.10(D) + 0.25(Q) = 13.60 ⇒ 0.05D + 0.70 + 0.10D + 0.25Q = 13.60 ⇒ 0.15D + 0.70 + 0.25Q = 13.60 ⇒ 0.15D + 0.25Q = 12.90 ⇒ 15D + 25Q = 1290
2D + Q = 88 ⇒ -15(2D + Q = 88) ⇒ -30D - 15Q = -1320
15D + 25Q = 1290 ⇒ 2(15D + 25Q = 1290) ⇒ <u>30D + 50Q</u> = <u>2580 </u>
35Q = 1260

Q = 36
Answer: 36 quarters
You can figure out if two fractions are bigger by just cross multiplying the numerator and denominator of each fraction.

Multiply the 5 and 7, and then the 3 and 12. Be sure to start with the numerator of the first fraction.

5 * 7 = 35, 3 * 12 = 36
So

is bigger.
A is 0.0028
and B is 0.054
Answer:
3
Step-by-step explanation:
3