Answered

Annie bought 3/4 kg of cocoa powder, which cost ?12.92 per kg.
a. Estimate the cost.
b. Find the exact amount she had to pay.

Sagot :

HuInDWorldviz
Estimating it makes it turn to ?9.69 = ?10.00 or ?9.7 in 3 kg. Exact of it is ?9.69 in 3 kg.
Estimate: $13/kg. 

So it is 3/4 * $13 = $9.75. 

For exact, it is 3/4 * $12.92 = $9.69