1) Suppose the consumption of rice for each adult and each child are 2p kg and q kg respectively. For a pack of (5p+2q) kg rice, how many kg of rice will be left after supplying 2 adults and 3 children with it?
2 a) Find the number pattern of the sequence 11, 15, 19, 23, ...
b) If the nth term of the sequence is 415, find the value of n.
steps please!!!!!!!!!!
Maths!!!!!!!Quick!!!!!!
2006-10-14 9:00 am
回答 (1)
2006-10-14 9:08 am
✔ 最佳答案
1) 2 adults consume 2p *2 kg = 4p kg of rice, 3 children consume q *3 kg = 3q kg of ricerice left = 5p + 2q - (4p + 3q) = p - q kg
2a) The next number is the previous number plus 4
b) 11 + 4(n-1) = 415
n = 102
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