text: a math question (word problem)? ramos buys some pens and pencils. he buys seven more pens than pencils. pens cost $0.45 each and pencils cost $0.40 each. if he has $10 to spend, what is the greatest number of each he can buy? (pens,pencils)=(x+7,x)  45(x+7)+40x≦1000 9(x+7)+8x≦200 9x+63+8x≦200 17x≦200-63 17x≦137 x≦137/17 x≦8+1/17  max. x  is 8  (pens,pencils)=(15,8)