Question 998417

Please help. Anthony installs wheels on lawnmowers. He works on a 4-wheel and 5-wheel lawnmowers. One day he installed 98 wheels. He earned $6 for each lawnmower. How much money could he have earned that day?
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 7 four-wheelers, and 14 five-wheelers. Calculate the earnings.
12 four-wheelers, and 10 five-wheelers. Calculate the earnings.
17 four-wheelers, and  6 five-wheelers. Calculate the earnings.
22 four-wheelers, and  2 five-wheelers. Calculate the earnings.