1.6.1. The strongest is British Pound ( 1 BP= R 23.156548) and the weakest is Japanese Yen ( 1 Yen=R 0.144882)
1.6.2. It means that if South African citizens wants to exchange their money they can get less British Pounds than other currency and more Japanese Yen.
1.6.3 Total:
R 42000 + R 56 000 + R 42000 = R 140000
In Australian Dollars:
140000 : 11.518501= AUD 12,154.36
1.6.4.
One hundred and forty thousand South African Rand
Twelve thousand one hundred fifty four point thirty six Australian Dollars.