**The cost of a kiwi fruit was ¼ that of a rock melon. Melvin spent 4/7 of his money on 12 rock melons and 4 kiwi fruits. Then he used the remaining amount of money to buy 3 more rock melons and some kiwi fruits. How many kiwi fruits did he buy in all?**

**Solution**

Kiwi fruit ----- 1 unit

Rock melon ----- 4 units

12 rock melons + 4 kiwi fruits ----- 4/7 of money

(12 x 4 units) + (4 units) ----- 4/7 of money

48 units + 4 units ----- 4/7 of money

52 units ----- 4/7 of money

4/7 of money ----- 52 units

1/7 of money ----- 52 units divided by 4 = 13 units

The remaining amount of money he had was 3/7, therefore

3/7 of money ----- 13 units x 3 = 39 units

He used this amount of money to buy 3 rock melons and some kiwi fruits.

3 rock melons + unknown no. of kiwi fruits ----- 39 units

(3 x 4 units) + ? ----- 39 units

12 units + ? ----- 39 units

? ----- 39 units – 13 units = 27 units

1 unit ----- 1 kiwi fruit

27 units ----- 27 kiwi fruits

Total no. of kiwi fruits bought -----

4/7 of money was spent on 12 rock lemons and 4 kiwi fruits.

3/7 of money was spent on 3 rock lemons and 27 kiwi fruits.

Total no. of kiwi fruits ----- 4 + 27 = 31

**Answer: He bought a total of 31 kiwi fruits.**

## 3 comments:

Nanyang Primary School

SA2 2006 Primary 5

Question 46:

Three girls shared a sum of money. Cathy received $180 more than Betty. The total amount Betty and Cathy received was 3 times the amount Alice received. The amount Alice and Cathy received was 5 times the amount Betty received. What was the sum of money shared by the three girls?

pls enlighten. thanks

My reply can be found here.

thanks a lot.

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