Being a 5-2 CHAMPION is not about being able to solve a problem which you've done umpteen times.
A problem that you can solve easily is NOT A PROBLEM.
A 5-2 CHAMPION is one who perseveres and tries all sorts of methods and strategies to solve REAL PROBLEMS without giving up.
TRY THESE! =)
1) The mass of sand in Sack B was 1/4 the mass of sand in Sack A. After 52.5kg of the sand in SAck A and 10kg 150g of the sand in Sack B was used, the mass of sand in Sack A was 1/2 the mass of sand in Sack B. What was the total mass of sand in Sack A and Sack B at first?
ANSWER: 67.75 kg
2) The average numbenr of sit-ups performed by 15 girls and some boys was 50. The average number of sit-ups performed by the girls was 80% of the average number of sit-ups performed by all the pupils. The average numbe of sit-ups performed by the boys was 30% more than the average number of sit-ups performed by the girls.
a) What was the average number of sit-ups performed by the girls?
ANSWER: 40
b) What percentage of the pupils were boys?
ANSWER: 67.5%
No comments:
Post a Comment