Supply Club, Inc., sells a variety of paper products, office supplies, and other products used by businesses and individual consumers. During July 2021 it started a loyalty program through which qualifying customers can accumulate points and redeem those points for discounts on future purchases. Redemption of a loyalty point reduces the price of one dollar of future purchases by 20% (equal to 20 cents). Customers do not earn additional loyalty points for purchases on which loyalty points are redeemed. Based on past experience, Supply Club estimates a 60% probability that any point issued will be redeemed for the discount. During July 2021, the company redeemed 12,600 points and sold additional product of $157,500, so it recorded $170,100 of revenue. The aggregate stand-alone selling price of the purchased products is $170,100. Seventy percent of sales were cash sales, and the remainder were credit sales. Explanation of answer:

157,500 points $0.20 discount per point =	$	31,500
Estimated redemption		60	%
Stand-alone selling price of loyalty points:	$	18,900
Stand-alone selling price of purchased products:		170,100
Total of stand-alone prices	$	189,000

Supply Club must identify each performance obligations share of the sum of the stand-alone selling prices of all deliverables:

Loyalty points:	$18,900	=	10	%
	$18,900 + 170,100
Purchased products:	$170,100	=	90	%
	$18,900 + 170,100
			100	%

Supply Club then allocates the total selling price based on stand-alone selling prices, as follows: $170,100 Transaction Price 90% = $153,090 Purchased products $170,100 Transaction Price 10% = $17,010 Loyalty points discount Cash ($170,100 80%) = $136,080 Accounts receivable ($170,100 20%) = $34,020

Why is the cash multiplied by 80% when it states in the information that cash sales accounted for 70% of the sales? Is this a textbook error or am I missing something?