<human>:  Tommy is looking at his change collection. He has 10 more dimes than pennies. He has twice as many nickels as dimes. He has 4 quarters. He has 10 times as many pennies as quarters. How many nickels does he have?
<bot>: How many quarters does Tommy have? ** Tommy has 40 pennies because 10 x 4 = <<10*4=40>>40
How many dimes does Tommy have? ** Tommy has 50 dimes because 40 + 10 = <<40+10=50>>50
How many nickels does Tommy have? ** Tommy has 100 nickels because 50 x 2 = <<50*2=100>>100
#### 100