Vanessa, Usha and Ken baked some biscuits. Vanessa and Usha baked
23 of the biscuits. Usha and Ken baked
35 of the biscuits. Vanessa and Ken baked 462 biscuits altogether.
- What fraction of the biscuits did Vanessa and Ken bake altogether?
- How many biscuits did the three girls bake in total?
| Vanessa |
Usha |
Ken |
Total |
| 2x5 |
1x5 |
3x5 |
| 2x3 |
3x3 |
5x3 |
| 6 u |
4 u |
5 u |
15 u |
(a)
The total number of biscuits the same. Make the total number of biscuits unchanged. LCM of 3 and 5 is 15.
Number of biscuits baked by Usha
= 9 u - 5 u
= 4 u
Number of biscuits baked by Vanessa and Ken
= 6 u + 5 u
= 11 u
Total number of tarts = 15 u
Fraction of the biscuits baked by Vanessa and Ken =
1115(b)
Total number of biscuits baked by Vanessa and Ken = 11 u
11 u = 462
1 u = 462 ÷ 11 = 42
Total number of biscuits baked
= 15 u
= 15 x 42
= 630
Answer(s): (a)
1115; (b) 630
