
By: achieve_goal (offline) Tuesday, November 01 2011 @ 08:33 AM CDT (Read 1106 times)



achieve_goal 
1. The mass of a crate of oranges is 3/4
the mass of a crate of pears. The mass of
a crate of lemons is 1 1/2 times the mass of the
crate of pears. The crate of lemons is heavier
than the crate of oranges by 15 kg. What
is the mass of the crate of pears?
2. The number of pupils in a school
is 186. 2/3 of the number of girls is equal to
3/11 of the number of boys. How many more
boys than girls are there in the school?

Regular Member
Registered: 09/14/11 Posts: 102





By: GIM (offline) Tuesday, November 01 2011 @ 11:17 PM CDT



GIM 
Question1.
Orange  3 units
Pear  4 units
Lemon  1.5 x 4 = 6 units
Difference between lemon and orange,
6 units  3 units = 3 units
3 unis  15 pcs
1 unit  15 / 3 = 5 pcs
pear 4 units  5 x 4 = 20 pcs (answer)
Question 2
2 units of girls = 3 units of boys
1 unit of girl = 1.5 unit of boys
Convert 3 units of girls in terms of unit of boys
Total Girls  3 units of girls x 1.5 = 4.5 units of boys
Total Boys 11 units of boys
Difference  11  4.5 =6.5 units
Total boys + girls = 4.5 + 11 = 15.5 units
15.5 units  186
1 unit  186 / 15.5 =12
difference  6.5 units x 12 =78 pupils ( answer)

Regular Member
Registered: 11/07/10 Posts: 70



