A bottle of cooking oil weighs 2 kg. A hawker uses 8 such bottles in 4 days. If he uses the same amount of oil every day, how many 5-kg tins of cooking oil will he use in 10 days?
Solution
1 bottle ----- 2 kg
8 bottles ----- 2 kg x 8 = 16 kg (for 4 days)
1 day ----- 16 kg divided by 4 = 4 kg (per day)
10 days ----- 4 kg x 10 = 40 kg
If 5-kg tins were used ----- 40 kg divided 5 kg = 8
Answer: He would use 8 5-kg tins in 10 days.
Note – “The Singapore Hokkien Huay Kuan 5-School Combined Prelim Maths” is the common Maths Prelim Exam for Tao Nan, Ai Tong, Chongfu, Nan Chiau and Kong Hwa schools.
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