He increased his speed by 150*.3=45 mph

So his new speed was 150+45=<<150+45=195>>195 mph

He increased it a further 10 mph so his new speed is 195+10=<<195+10=205>>205 mph

# Answer

205
Question:
James supercharges his car which increases his car's speed by 30%.  He then cuts weight by 15% which increases the speed a further 10 mph.  If his car's original speed was 150 mph what is the new speed?
Answer:
Let's think step by step.

user
205
James supercharges his car which increases his car's speed by 30%.  He then cuts weight by 15% which increases the speed a further 10 mph.  If his car's original speed was 150 mph what is the new speed?
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