Number of sets of pears bought
= $8.40 ÷ $4.20 = 2

Since there are 2 pears per set,
number of pears bought
= 2 x 2 = 4

Number of sets of apples bought
= $30 ÷ $10 = 3

Since there are 4 apples per set,
number of apples bought
= 4 x 3 = 12

Average price of 1 apple
= $10 ÷ 4 = $2.50

Since an orange cost 25% less than an apple,

100% - 25% = 75%

The average price of 1 orange
= 75/100 x $2.50
= $1.875

Number of oranges bought
= $15 ÷ $1.875
= 8

Total number of fruits bought
= 8 + 12 + 4
= 24

Alternative way to find number of oranges:

We know that oranges cost 75% of apples.

Since 4 apples cost $10,

4 oranges cost $10 x 75/100 = $7.50

(Or $10 x 3/4 = $7.50 since 75% and ¾ are effectively mean the same thing)

Number of sets of oranges
= $15 ÷ $7.50 = 2

So number of oranges bought
= 2 x 4
= 8

Thanks and i will try to solve the qn again

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