The difference between two numbers is 70. 3/5 of the larger number is two times that of the smaller number. What is the smaller number?


TIA

Nebbermind:

DaddyD:

4/7 of the pupils in a class were boys. 1/3 of the boys wore spectacles and 1/2 of the girls wore spectacles.

A) what fraction of the pupils in the class wore spectacles?
B) 9 girls in the class wore spectacles. After 4 boys who wore spectacles left the class, what fraction of the pupils in the class were girls? Express your answer in the simplest fraction.

TIA!

Class = 21U
Boys = 4/7 of 21U = 12U
Boys w specs = 1/3 of 12U = 4U

Girls = 21U - 12U = 9U
Girls w specs = 1/2 of 9U = 4.5U

Children with specs = 4U + 4.5U = 8.5U
Fraction = 8.5U/21U = 17/42

If 4.5U = 9, then U = 2
=> 21U = 42
Girls = 12U = 24
After 4 boys left the class, fraction of girls = 24/38 = 12/19

Sorry a bit lost on part B.
Girls= 12U=24? Derived from where?
Since above Girls= 21U-12U=9U
The 4 boys left... Goes into which part of the equation?
TIA

4/7 of the pupils in a class were boys. 1/3 of the boys wore spectacles and 1/2 of the girls wore spectacles.

A) what fraction of the pupils in the class wore spectacles?
B) 9 girls in the class wore spectacles. After 4 boys who wore spectacles left the class, what fraction of the pupils in the class were girls? Express your answer in the simplest fraction.

TIA!

Nella travelled 1/3 of a journey by bus, 2/3 of the remainder by bicycle and the remaining 9km on foot.

A) how far did Nella cycle?
B) what was the total distance travelled?

TIA!

Any idea where to get P5 Chinese papers?

TIA!

How to do this?

I can solve by guess and check method.
Able to do in other methods? E.g. Assumption method?
TIA.

John has some two-dollar notes and five-dollar notes. 1/3 of his notes are two-dollar notes. The value of all his notes is $72. How many five-dollar notes does he have?

Monday is Science ICAS?

Not school grading... no need prepare right?
Or I wrong?
:?