A shop sells pens and pencils. Each pen costs \$0.80 and each pencil costs \$0.50. A customer buys 23 items and spends \$15.10 in total. Let p be the number of pens and q be the number of pencils. Which pair of simultaneous equations represents this situation?

p + q = 23 and 0.80p + 0.50q = 15.10

p + q = 15.10 and 0.80p + 0.50q = 23

p + q = 23 and 0.50p + 0.80q = 15.10

p + q = 38.10 and 0.80p + 0.50q = 23

EM-426

Forming equations from word problems

E Math · Secondary 3 · Hard · Forming equations from word problems

A shop sells pens and pencils. Each pen costs \$0.80 and each pencil costs \$0.50. A customer buys 23 items and spends \5.10 in total.

Let

p

be the number of pens and

q

be the number of pencils. Which pair of simultaneous equations represents this situation?

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