IDNStudy.com, ang iyong mapagkakatiwalaang mapagkukunan para sa eksaktong at maaasahang mga sagot. Sumali sa aming platform upang makatanggap ng mabilis at eksaktong tugon mula sa mga propesyonal sa iba't ibang larangan.

Six days before Christmas, Sarah decided to buy gifts for her family, friends and relatives, on the first day she bought 5 gifts, on the next day, she bought 8 and on the 3rd and 4th day she bought 13 and 21 gifts. How many gifts she bought all in all before the Christmas day? A. 55 B. 89 C. 136 D. 135​