Question

3. There were 3400 spectators in a stadium at the start of a football
match. By hall time 28% of the spectators had left. How many
spectators remained in the stadium.
A. 952
B. 2448
C. 280
D. 3400
4. The average age of three boys is 15 years and their ages are in
proportion 3:5.7 what is the age in years of the youngest boy?
A. 3 B. 6 6.9 D. 12
5. The price of potatoes fell from 6.50 birr per kg by 20%. How much
do potatoes cost now?
A. 4.2
B. 4.5
8.5.2
D 5.5
6. Five boys are playing basketball in their school. Their individual
heights are 178 cm, 185cm, 177 cm 180 cm what is their average
height?
A. 180 cm B. 182 cm C. 185 cm D. 190 cm
what's the answer and formula please ​

Answer 1

Question 3 answer is b option

Step-by-step explanation:

first let us take out 28% of 3400

So,

3400×28/100 = 952

then subtract 952 from 3400

So,

3400-952 = 2448

so, the answer is option b 2448