Bobby bought some kiwis and dragon fruits in the ratio of 2 : 7 respectively. The cost of one kiwi was $1.80 more than the cost of one dragon fruit. He spent a total of $63 buying the kiwis and dragon fruits. The total cost of the dragon fruits was $7 more than the total cost of the kiwis. How much did one dragon fruit cost?
| |
Kiwis |
Dragon Fruits |
Total |
| Number |
2 sets |
7 sets |
|
| Value |
$1.80 more |
|
|
| Total value |
|
$7 more |
$63 |
Total cost of kiwis
= (63 - 7) ÷ 2
= 56 ÷ 2
= $28
Total cost of dragon fruits
= 28 + 7
= $35
2 sets of kiwis = $28
1 set of kiwis = 28 ÷ 2 = $14
7 sets of dragon fruits = $35
1 set of dragon fruits = 35 ÷ 7 = $5
Difference in cost of 1 set of kiwis and 1 set of dragon fruits
= 14 - 5
= $9
Number of fruits in 1 set
= 9 ÷ 1.80
= 5
Cost of one dragon fruit
= 5 ÷ 5
= $1
Answer(s): $1
