Daily challenge
Tuesday, 1 September 2026
SUMPRODUCT multiplies matching entries from two ranges and adds the results — a weighted score in one step instead of three multiplications and a sum.
You handle vendor selection for a manufacturing company's procurement team. Four vendors have been scored out of 10 on quality, price and delivery, and the weight each criterion carries toward the final decision sits in row 2 — 40% quality, 35% price, 25% delivery. Work out each vendor's overall weighted score in column E, in one formula that pairs each vendor's three scores with the matching weights.
The last 14 days. Today's challenge is free while your streak is alive; Pro opens every past day too.