If a spiral notebook cost $15, a 20% discount would reduce the price by 20/100 *15 = $<<15*0.2=3>>3

At a 20% discount, the buying price of a spiral notebook book is $15-$3= $<<15-3=12>>12

At the same discount, a personal planner cost would reduce by 20/100 * $10 = $<<20/100*10=2>>2

The new buying price of a personal planner will be $10-$2 =$<<10-2=8>>8

To buy four spiral notebooks at a 20% discount, you'll pay 4*$12 = $<<4*12=48>>48

At the same time discount, you'll buy eight personal planners at a cost pf 8*$8 = <<8*8=64>>64

In total, to buy eight personal planners and four spiral notebooks, you'd have to pay $64+$48 = $112

# Answer

112
<|im_start|>system
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<|im_start|>user
A spiral notebook costs $15, and a personal planner costs $10. How much would it cost in total to buy 4 spiral notebooks and 8 personal planners at a 20% discount?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
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user
112
A spiral notebook costs $15, and a personal planner costs $10. How much would it cost in total to buy 4 spiral notebooks and 8 personal planners at a 20% discount?
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